Winds at that altitude can reach 100 mph. Just figuring out where they are would be a challenge:)

Considering the the German´s managed world wide flights in them with early 1900´s technology, I think we might manage quite well with GPS and modern weather tracking. Computers should be able to put those winds to good use.

Agreed. A number of 'outdated' forms of technology need to be revived. New technology can ionterface with the old. to make the old work better, safer:

- Trains
- Streetcars
- Sailing ships
- Blimps and Zeppelins
- Shipping canals

A lot of 'old fashioned' jobs need to be rediscovered, too. People need interesting things to do, besides work in a store in a mall ... or sit in an office sending emails back and forth to others doing the same thing.