171 comments on The Fifth Problem: Peak Capital
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GAIA Host Collective
A sustainable population means a population that is low enough to exploit Earth's resources at the same rate that Earth is replenishing these resources. Overpopulation means that resources are being used up at a higher rate than this replacement rate.
Then why are we mining/extracting increasingly lower grades of ores and fossil fuels?
Are you talking about the future or right now? Agricultural soil is being paved over and depleted at a higher rate than it's being created. World grain stores are dropping.
You said it, the world fish stocks are collapsing. Species are becoming extinct at an increasing rate, fresh water is becoming less available in certain parts of the world, rainforests are disappearing, ...
So you're saying there are no physical limits to economic growth?
You have data showing we are mining lower grades of hard rock metal? I've looked for it on the web and came up empty. Fossil fuel are a special case. It's burnt once and then it is gone. We seem to be running out of light sweet crude which just means our refineries will cost more per barrel.
Robert2734, you must obviously hail from a different planet, one whose radius is increasing linearly with time. If your home planet's radius is steadily increasing, then your planet's surface area is expanding as the square of time, and its volume is expanding as the cube of time. Your planet could possibly sustain exponential growth of population, capital and economic output for a very long time, because your planet has no resource limits to growth. This planet, unfortunately, has a fixed radius and hence there are resource limits to growth that only idiots can ignore.
Didn't you know, the Earth is expanding! It grows for us, to sustain our man-made Cockaigne indefinitely! You can watch it happen here.
Just kidding. We are doomed and nothing can save us. There are simply too many people with their heads in the clouds, unwilling to face reality and act accordingly.
Why do you mock Samuel Warren Carey's work? Have you actually done any real research on it? If planets arent growing, then try explaining this video. I've said it a million times, put your money where your mouth is. At least have the intellectual honesty to try and explain Neal Adam's videos. There are a dozen more that are equally convincing.
I find it ironic that you'd say "We are doomed and nothing can save us." The solution lies along the same path as expansion tectonics. There are whole avenues of science that remain closed off to the scientific community. From the insights revealed by Kirlian photography to the beautiful simplicity of the WSM, the possibilities are amazing. Maybe if you took a little time away from all your doom and gloom...
If people continue to allow themselves to be manipulated into a very limited scientific paradigm, then yes we are doomed. The "powers that be" today are even more powerful that the "powers that were" hundreds of years ago that had everyone convinced the earth was flat. Why people choose to be enslaved by these same forces throughout history is something that I may never understand. But if we are doomed, it is only due to a failure to use our brains.
Not a convincing explanation at all.
How about this? Water ice under high pressure at a potential subduction zone melts - that's how ice skates work - and any water produced would sink below ice without trace through the obvious cracks.
So you don't see subduction zones or need expanding planets, just a simple everyday phase change, all you see is the spreading zones as underlying liquid water freezes as it is exposed in the cracks between the moving plates of ice. The smooth filling of the gaps between the obviously spreading plates of ice is just evidence of liquid water under the ice.
This planet, unfortunately, has a fixed radius...
Anywhere from 50 to 100,000 tons of mass is added to the earth each year. Though this does not appreciably increase the size of earth, it does increase the radius. There is no fixed earth. I thought fixed earth ideas went away with Aristotle's death over 2000 years ago?
As far as resource limits, our technology is relatively primitive and we are unable to penetrate more than 10 miles into the surface. We have no idea what resources the planet contains.
The scientific community has dismissed the "Expanding Earth Theory". The following details are from the Wikipedia entry http://en.wikipedia.org/wiki/Expanding_earth_theory
"Modern measurements have established very stringent upper bound limits for the expansion rate, which very much reduces the possibility of an expanding Earth. For example, paleomagnetic data has been used to calculate that the radius of the Earth 400 million years ago was 102 ± 2.8% of today's radius.[6] Furthermore, examinations of earth's moment of inertia suggest that no significant change of earth's radius in the last 620 million years could have taken place and therefore earth expansion is untenable.[7]
The primary objections to an expanding Earth have centered around the lack of an accepted process by which the Earth's radius could increase and on the inability to find an actual increase of earth's radius by modern measurements. This issue, along with the evidence for the process of subduction, caused the scientific community to dismiss the theory of an expanding Earth."
You're rebutting something completely different from the original assertion.
Oh, boy.... so often I find myself confronting this unbelievably naive argument: "we'll just dig deeper". Do you realize how expensive it is to dig holes miles long? Besides; go back to your geology books. "Ores" are the result of the combination of geological and biological factors and these interactions take place at or near the surface of the planet. Even if you could dig a 50 miles deep hole, you won't find anything interesting in there.
Removing overburden is expensive, but we aren't exactly penetrating down to the mantle and exhausting all the lithophilic ores anytime soon.
Lithophilic ores are a small subset of useful metals. In any case, by definition ore is only "ore" if it can be mined at a profit (positive ROI); you appear to be talking about mining metals at a loss, irregardless of cost. Running out is generally irrelevant for metals; affording to be able to mine or recycle them is relevant, and peak capital (affordability) is the subject of this thread.
You appear to be constructing strawmen. Stop.
Here are a few - Google search "declining ore grades". Many metals are now mined from sands rather than for pure ore - copper for instance - takes more fuel which you admit is declining to do that plus way more waste.
http://www.miningweekly.com/article/northam-continues-to-struggle-with-d...
http://www.onemine.org/search/summary.cfm/Technical-innovations-spur-res...
http://www.foe.org.au/resources/chain-reaction/editions/103/sustainable-...
http://books.google.com/books?id=DsSmPKEOWDcC&pg=PA1373&lpg=PA1373&dq=de...
http://books.google.com/books?id=L9yA5gHwKn4C&pg=PA891&lpg=PA891&dq=decl...
You might want to include "log normal distribution" for why declining ore grades are generally unimportant for most minerals.
Give a look to this article by myself and my coworker Pagani
www.theoildrum.com/node/3086
Bandi is once again reciting the Club of Rome myth that we are running out of resources. This myth was decisive refuted by H.E. Goeller and Alvin Weinberg in their 1975 paper "The AGE OF SUBSTITUTABILITY: or What to Do When The Mercury Runs Out? " Although not well know this paper is accessible online through the U.S. Department of Energy, Office of Scientific & Technical Information database.
http://www.osti.gov/energycitations/servlets/purl/5045860-HVRCd7/
Goeller and Weinberg assessed the catastrophists’ view that is the Club of Rome view. They found that some mineral were so abundant in the earth that they were inexhaustible for all practical purposes. They concluded, "Eventually the society will subsist on renewable resources, and on those elements that are practically infinite, such as iron and aluminum. According to this view the society will settle into a steady-state of substitution and recycle. This asymptotic society is called the Agc of Substitutability."
Goeller and Weinberg argue that the Limits of Growth is incorrect in assuming that "the effect of exponential growth is to reduce the probable period of availability of aluminum from 100 years to 31 years.'' In fact, the amount of aluminum found in the Earth's crust is for all practical purposes unlimited. It was just a matter of extracting it through the use of energy or other technologies. All of the raw materials needed to maintain society in a high level of material civilization could be obtained through recycling or substitution. There are two notable exceptions to the rule: Fossil fuels, i.e, CHx, and phosphorous.
They wrote: "Such a civilization would be based largely on glass, plastic, wood, cement, iron, aluminum, and magnesium: whether it will be anything like our present society will depend upon how much of the ultimate raw material , energy,
we can produce - and how much energy will cost, both economically and
Environmentally."
There is very large amount of thorium in the Earth's crust as Weinberg well knew, and thorium is recoverable with favorable ERoEI ant levels of average crustal concentration. Using Weinberg's favorite nuclear technology the Thorium breeding Molten Salt Reactor (the LFTR), the energy would always be available to
recover thorium at crustal concentration levels with very favorable ERoEI.
Goeller and Weinberg argue that some sectors of the economy would be hard hit by the Agc of Substitutability. But that the economy would continue to function.
There are actually other sources of rare and unsustainable minerals, which would otherwise be un-sustainable. That would be nuclear alchemy, the production of new minerals as a byproduct of nuclear fission. These include Krypton, Rubidium, Yttrium, Zirconium, Molybdenum, Ruthenium, Rhodium, Palladium, Cadmium, Tin, Indium, Antimony, Cerium, Neodymium, Promethium, and Samarium. In addition to these fission byproducts other minerals can be produced through alternative nuclear alchemy that takes advantage of spare neutrons available in Uranium fuel cycle breeder reactors to alter common existing minerals into minerals that have been exhausted in nature.
If Bandi has seriously investigated the literature on long term resource availability, he would be aware of both the Goeller and Weinberg hypothesis, and the potential of nuclear alchemy. The Goeller and Weinberg hypothesis and the case for nuclear alchemy would constitute a null hypothesis for Bandi’s hypothesis. In which case his failure to acknowledge support for the null hypothese would amount to an academic covertup of conflicting information. If Bandi was unaware of the Goeller and Weinberg hypothesis and the potential of nuclear alchemy, then his scholarship is clearly inadequate. In either case failure to mention support for for the null hypothesis indicates that Bandi should not be taken seriously.
Yes, and he forgot to mention all the metals in the Moon and other planets and asteroids, and all the metals in planets circling other stars, and all the metals constantly being formed in stars by fusion reactions and super-explosions. How could he possibly have been so derilict in his duty to preach abundance?
metalman, you haven't the slightest idea what you are talking about.
Thanks, I choose to regard that as a compliment. In any case, the subject of this thread is supposed to be peak capital, and mining is perhaps the most capital-intensive industry (it takes a lot of money to start a new mine). The extraterrestrial examples I gave (somewhat like the reactor examples provided by you) were metals that we could perhaps recover if we had infinite capital to invest in the attempt. Do we? Does anyone?
""(it takes a lot of money to start a new mine). ""
Sorry, wrong. It takes very little money to start a new mine. Just pick up a shovel and get with it.
Slavery has been around for thousands of years and will make a slow but steady increase as time moves on. Look at a little history. Look around at what is going on today. What you are talking about is typical BAU, that we needs lots of new machines and a huge supply of energy. All we need are a few slaves.
Sorry for the misunderstanding. I was talking about a large industrial-scale mine, with an expensive exploration/drilling program, roads and railroads, energy supplies, townsite, schools, offices, environmental permits, waivers, land exchanges, open pits or mineshafts, explosives, trucks, pumps, crushers, conveyor belts, mills (concentrators), tailings ponds, stockpiles, tank house and/or smelter, etc. These constitute the capital that must be constructed or bought. Human capital that must be hired, trained, and housed is equally critical. You can of course dig a pit in your own back yard and mine plain dirt, or feed (or starve) hundreds of slave miners with gold pans along a river, but total production will probably be limited.
In the distant past I visited numerous Chinese mines where human and animal labor, insofar as possible, was used ingeniously as a substitute for capital expenditures, but even those mines made extensive use of capital (mines and mills) inherited from the Russians after the Russians were expelled around 1960. At the same time, I saw highways being built by thousands of laborers with hammers used to make gravel from stones (as a substitute for a crushing plant). I agree with you that such a time may lie in our own future, but I am in no hurry to see it.
Sure, over long time horizons. The notion of 'peak' capital seems a bit unfounded, along the old limits to growth arguments. I dont see why we wouldn't exploit extraterrestrial orebodies in the next two or three centuries, especially for siedrophile ores that happen to be stuck down at the core on earth.
At the time of the moon landing in 1969 this was the vision of the future. No one would have believed at that time what very little would be accomplished in space exploration over the next 39 years, as they were extrapolating the incredible gains made over the previous 39 years (1930-1969) into the future. It does appear that the Star Trek fantasy dies hard, but it is dying none the less.
I'll let you propose anything you like over the next two or three centuries or millenia, although I'm no longer as optimistic as you. For practical reasons, most people on this board seem worried about getting through the next two or three decades.
Yes we do.
Take a look at this copper mine in Utah and listen to Chris Martenson's description.
If that doesn't clear it up for you then nothing will.
http://www.chrismartenson.com/crashcourse/chapter-18-environmental-data
What is not said is why copper is cheaper now mining 0.2% ores than it was 100 years ago mining 5% ores?
Could be the acid leach and solvent extraction technology( certainly energy wasn't cheaper). In the old days ores were heated with wood or coke and copper ran out, used a lot of energy, left a lot of copper behind. High grade ores were rare, so copper was expensive. Low grade ores are 100 times more abundant, prices are lower.
I certainly haven't done the research but I strongly suspect by looking at the video of the Bingham Canyon mine with those giant trucks looking like tiny ants in a crater, where there used to be a mountain, that the true costs of energy and ecological destruction are not being accounted for. I also suspect that if we continue on our the present path, even the costs as calculated by currently accepted accounting practices will probably not stay cheap for long. Just a hunch.
Ditto to no formal research, but a trip to Jerome, AZ a few years ago was instructive. Some of the ore in Jerome had as much as 40 to 60% CU. An amazing amount of copper, silver and gold were pulled out of the ground, both in open pit mining and following veins underground, between the 1890's and the 1950s. Decades later Phelps Dodge corp came back to see if they could squeeze anything from the tailings heap. There was barely anything worth leaching out with any amount of love, money, acid or prayers. The old miners did a thorough job of extracting the minerals from the ore.
Jon.
It is not cheaper in terms of energy required.
http://www.mining-technology.com/projects/bingham/
The bad news is we are mining 0.8% copper. The good news is that we have plenty of 0.8% copper. I read somewhere (how's that for a source) that copper is the only metal that had a noticeable decline in ore concentraton. I now have a source that in the 19th century we were mining 10% copper ore so thanks for that.
The Bingham project is 0.54% copper today. It was never a rich ore but it is ginormous. During WWII, it produced a third of this nation's copper. It also produces more gold than a gold mine and more silver than a silver mine. In 2006, it produced more molybdenum by dollar value than copper. Admittedly the price of moly went wonky.
Somebody is trying to open a new 1.5% copper mine here in Santa Rita. This is an admittedly a rich ore (for today). Arizona just has oodles of copper porphyry orebody that is the Bingham's geology. Most of it is not economical (yet).
We took the hit of declining copper quality early in the 20th century. Going forward we can mine 0.8% copper as far as the eye can see.
Robert a Tucson
Yeah, you're probably right, the only thing is, some of us are not particularly pleased with the view.
Well, I take issue with the concept that we are simply running out of metals. Here in Arizona, we have kids falling into abandonned mines. Mines are built on federal lands according to the mining act of 1872 and the locals can just lump it. I don't want a mine in my backyard including the proposed 1.5% copper mine but that's a different issue.
I think its a matter of taste. I think the giant open pit mines are awesome in scope and magestic. Your milage may vary.
What is that photograph? An ancient Roman Colosseum or Greek amphitheater?
Robert - Not sure where you are getting 0.8% copper from, especially as far as the eye can see. The web site lists reserves of 0.54% copper and a deep resource of 0.7%. Typically, the deeper ore is not reserves (cannot be mined at a profit)because mining it is too expensive in terms of waste rock that must be moved to access it (too high a stripping ratio). And that's at today's energy prices. Keep in mind that Bingham is a very old, comparatively high grade open pit mine (mined in the early days with rail cars, inamuch as trucks were not yet available). It and Freeport's Morenci, Arizona are the two ancient U.S. super-giants of copper. New U.S. open pit mines (e.g., mines near Safford, Arizona recently opened by Freeport) are typically much lower in grade (0.1-0.2% comes to mind).
In any case, I agree with you that we are not likely to run out of most metals before we run of cheap energy to mine them in increasingly low-grade or deep deposits. We are also likely to run short of demand, if expensive energy causes the world economy to suffer more than it already has. That web site mentions that Bingham Canyon, despite its relatively high grade ores, was driven out of business in the 1970's by unexpectedly high costs and low demand (and copper prices). And that oil crisis was ephemeral. Peak production of copper could be caused by a variety of factors other than declining ore grade. It will still be peak, though.
Finally, I caution you about obtaining all your data from company web sites. These generally do not state explicitly the future straight-line assumptions (regarding all types of costs, metal prices, government regulations, etc.) built into their projections.
http://en.wikipedia.org/wiki/Porphyry_copper_deposit
http://www.mindat.org/loc-53634.html
Safford mine is 0.37% copper. The wiki lists copper porphyry deposits as 0.4% to 1.0% copper which begs the question why Freeport decided to build a 600 million dollar mine there.
Copper porphyry can be mined cheaply by open pit heap leaching despite low grade ore so they do.
There's plenty of copper porphyry deposits in the ground. I'm not prognosticating about peak production. The stone age didn't end because we ran out of stones and the bronze age didn't end because we ran out of copper.
The Wikipedia article is dated and states at the top that it needs professional input. About what you'd expect from a 20 year old textbook. The Safford article quotes data on reserves and grade from 1988, also about 20 years ago. The company web site here:
http://www.fcx.com/operations/USA_Safford.htm
does not give an ore grade, somewhat curiously, but does state that the mine is currently operating at 50% capacity, owing to current economic conditions. This suggests that the ore grade is marginal at current prices (about $2.00/lb, half of what they were a year ago), and that the company is high-grading (selectively mining) some of the better ore in order to maintain at least some production.
A professional level talk I attended about a year ago stated that Safford ore of greater than 0.1% is sent directly to the leach pads, whereas ore above 0.2% (a distinct minority) is crushed first, to improve recovery. Lower grade mineralization was waste even at $4/lb owing to the high cost of sulfuric acid.
The ore grade changed by sitting in the ground for 20 years?
Sulfuric acid is cheap. Sulfer is a byproduct of oil refining that is burnt and reacted with water to make sulferic acid. You can have it for the price of shipping.
If civilization is about to come to an end due to no more copper, isn't it curious we just opened the first copper mine in thirty years? And even more curious they can't sell all they can mine.
No, but the ready availability of higher grade ores changed. That deposit was discovered in the 1950's and had to wait 50 years until copper at such low grades was profitable, because copper at higher grades (and profitability) could no longer supply increasing demand. Somewhat analogous to putting tar sands into production.
If prices drop they can still sell all the copper they can mine. They just can't sell it at a profit (they lose money on every pound). Only governments seem to like that type of economics.
The production ore grades are different (lower) than was reported 20 years ago because they are mining what is currently accessible near the surface. The possibly higher grade ores present at much greater depth are, for the moment, irrelevant, and may never be mined if costs rise too much.
Your inferred data on the ready availability of sulfuric acid, and its cost of shipping, seem to need updating too.
http://www.soyatech.com/print_news.php?id=11703
That's true. H2SO4 went for $90/ton to $400/ton to $90/ton. Rail costs are a penny or two a ton-mile or maybe $20/ton but if you're along the Gulf coast it can be moved by barge.
If nobody openned a new mine in the US in 30 years, how does ore quality change? At least nationally. It seems like before the recent rise in copper prices, mines were closing. Which isn't the behavior you expect if a shortage of copper was causing civilization to collapse.
Good luck on moving acid to Arizona by barge.
Regarding ore quality, I'm not sure I understand your question. Ore quality is constantly changing with each new blast, even in an open pit mine, and must be constantly monitored and adjusted for in the mill. Open pits that once mined 1-2% ore (now fully depleted) are mining 0.2-O.5% ore, using a fully paid for plant (preexisting capital) or different technologies. At a given time in the life cycle of a mine, lower metal prices will cause broken rock that once would have been milled or leached to be sent to the waste pile, probably raising the apparent ore grade of the mine (and lowering ultimate production at the same time). That is, a drop in metal price causes ore to become waste. Is this so complicated?
Any statement of ore grade and tonnage, such as the one you cited from 1988, contains implicit assumptions about future metal prices and mining costs (including the cost of debt). These should always be stated explicitly, but commonly aren't, especially when reserve data is quoted in secondary or tertiary sources. Each long-term change in metal price or mining costs will cause a change in reserve grade and tonnage, even in the absence of depletion (i.e., of actual mining). With the advent of specialized mining software, these calculations have become easier to make, but reserve data still isn't published more than once a year, in general, and may not even be changed that often. Nevertheless, if you think that ore reserves are a constant, you must be thinking of published Saudi oil reserves...
The close dependence of ore reserve calculations on assumptions regarding future prices and costs makes me uncomfortable when people regard them as written in stone. Add to this the fact that drilling out ore reserves is extremely expensive, and generally is stopped as soon as sufficient reserves (say, 20 years worth) are delineated to satisfy prospective lenders or investors, and I cringe when well-intentioned people on this board use published ore reserves as definitive indicators of an impending future shortage of metals.
No one, least of all me, claims that a shortage of copper is causing civilization to collapse. Mines are always opening and closing, because the metal price adjusts much more rapidly than the effort and costs associated with opening a new mine (with opening delays of 5 or 10 years to, in the case of Safford, 50 years). It is very easy to get the timing wrong, as happened with Safford opening just as the copper price crashed. Closed mines may reopen many years later, at a time of very high demand, unless they closed because they were completely depleted (which, so far, is comparatively rare, although there are examples). Another "terminal" circumstance would be if the government, through ignorance of demand cycles or overzealous environmentalism, forced the mine to permanently fill in the pit and dismantle the mill because the the mine had closed solely owing to a drop in the metal price.
That said, U.S. and Canadian miners are still taking lower grade or deeper ores than ever before, because the highest grade, most accessible (i.e., most profitable) ore is always taken first. Higher energy (or acid or other) costs will close the marginal producers first, because metal prices, at a given demand, are always determined by the costs of the marginal producers. Unless there are breakthroughs in technology in the future analogous to those in the past, this effect is eventually likely to raise prices at the same time that production is decreasing (because the marginal producers can't continue). That is, peak metals production. This would not necessarily indicate that the planet was "running short" of metals, only that the marginal costs of production were approaching the prices that people (or governments) could afford to pay, for any of a variety of reasons (including, of course, peak oil).
By "Somebody is trying to open a new 1.5% copper mine here in Santa Rita" I presume you mean the proposed Resolution Mine more than a mile roughly beneath the old mining town of Superior, Arizona (Santa Rita being an old mining town in New Mexico, now mostly swallowed by an open pit copper mine of the same name).
The Resolution company web site is here:
http://www.resolutioncopper.com/res/whoweare/1.html
The proposed underground mine would be about 7000 feet deep, where, according to a talk I heard, temperatures are not far short of boiling (owing to the high regional heat flow in central Arizona). A major expense will therefore be air conditioning and backup, because a failure could cause the heat death of all miners within minutes. In the overlying, now virtually exhausted Magma Mine, where the shaft was about half a mile deep, the rocks were notably hot to the touch when I was underground there, like standing next to a furnace. (It was the first mine in the USA to install chilled air conditioning, in the 1920's.) Ground control (prevention of rock bursts and slabbing) and high-volume hot groundwater pumping will presumably also be headaches. (Note: the Magma Mine, where I believe copper grades reached 10%, permanently closed somewhat earlier than planned owing to a water pump failure, and resultant catastrophic flooding.) Deep production at Resolution is optimistically planned to begin in 2020, if all of the feasibility tests turn out favorable.
The fact that this is considered a feasible mine for copper, not gold or platinum or diamonds, may be telling us something about the inferred future status of shallower copper orebodies.
http://www.bellcopper.net/s/News_Releases.asp?ReportID=300700
That's it. Rock temperatures of 185F according to the company Rio Tinto. Pressures that exceeds rock strength. They think there's a billion tons of high grade copper down there plus coproducts. Nobody said it is going to be easy. Maybe they can produce geothermal power while they are down there.
Maybe they can get some Finnish miners and tell them it's a sauna.
Screw gold and copper. What about phosphate and potash?
In another discussion on another forum, we reached a conclusion that phosphate has ultimate hard rock mining costs of around 50 times todays price for the effectively inexhaustible resources, which means the problem is ultimately one of demand management (recycling and different farming techniques) if these prices are too steep to continue current practices. Draw your own conclusions as to what that means; My opinion is simply infrastructure adjustment.
Since phosphate mine often yield recoverable thorium and/or uranium at ERoEI levels that are highly favorable there would be no problem with the energy expendatures required to recover the phosphate, because the energy return from the thorium and/or uranium would be far greater.
Agreed, but the notion of farmers paying 50 times their current price for fertilizer makes some people balk at its economic viability. I dont think that it would actually come to a 50-fold price hike on fertilizers however; Farming systems that require less fresh phosphate would become more common as prices rise.
Robert-
The sky is blue here on Earth-- What color is it on your planet?
Another often cited consequence of resource depletion is the difficulty of getting to available resources and in this case, the trade offs required to exploit them. Why in the world would we want to exploit this place for copper if we weren't running out of "easy" options elswhere?
The Source: The fight is brewing over the last great salmon headwaters.
http://www.nature.org/magazine/summer2009/features/art28511.html
Frugal, I wouldn't have wasted the cyberspace. We clearly have a troll here.
You would waste cyberspace, however, to state that you wouldn't waste cyberspace. :-)
There is also a factor called "Quality of Life". You can increase the food output for example by using artificial chemicals (fertilizers, pesticides) but that decrease taste, diversity and smell. You can place people one over another (apartments) but that decrease personal open-air space, sky view etc. You can convert forests into farms but that decrease number of wild animals, plants and hunting and beauty. It not mean that we humans should not alter any natural things, we can and we do, advent of agriculture is one example. In my opinion this also follow the normal curve, at first when we humans have started shifting from hunting & gathering life to growing our crops we have increased quality of life by storing food, domesticating animals, increasing our numbers, building empires, building better homes, increasing our knowledge about medicines, time and metals. This kept going on for several thousands of years. Even at time of alexander it was really a service to humanity by knowing about maps, sindhi cotton etc. I think the peak came about 1500 ce. Then there was a plateau till 1700s. The problem started when industrial revolution started. For the first time we humans have started polluting the world more than it can clean by using fossil fuels. The automation of cotton and textiles production changed the whole game. All of a sudden very important and useful art of weaving goes to near extinction. Many other romantic arts were also destroyed. Still some very useful inventions did took place like binoculars, telescopes, glasses, anti septics, anasthesia medicines, pencilin etc but in totality we humans were going towards the worse. It was, taken together, a loss. Borned in 1600 ce in an advanced city of the time such as Delhi is a thousand times better off than being borned in 2000 ce in newyork or london. In short, at some point, the so-called development must be stopped. Even till 1930 it was not too late.