Kunstler says that the airlines are the "canary in the coal mine". I have said (years ago) that we will know when we reach The Hole when airplanes start dropping out of the sky.

There was a time when electronic supplies were reliable: When local manufacturers made the parts in house. Philo T. Farnsworth understood this when he invented television. He sent his brother-in-law to apprentice to blow glass for vacuum tubes, he wound every coil himself.

When things are too complex to make it yourself with reasonable skills, you don't need it. Customary comfort and convenience are not 'needs', and we should remember this when looking for ways to ameliorate resource loss. The first question every good inventor learns to ask himself is, "Does anyone need this, or do I have to create a market for it?"
We've let the oil companies and auto industries and energy companies "create the market" which mostly wasn't needed, and now the PTB use "consumption" statistics to tell us how much we will "need" in the future.

What will fit through The Hole?