https://www.forbes.com/sites/s...

https://scienceblogs.com/start...

Your characterization of airplane crashes as being unsurvivable is incorrect. "since 1983, more than 95% of the passengers survived", says National Transportation Safety Board. https://www.ntsb.gov/news/pres...

See https://en.wikipedia.org/wiki/..., https://en.wikipedia.org/wiki/..., http://www.britannica.com/topi...

Douglas McGregor, The Human Side of Enterprise, 1960. http://www.amazon.com/Human-Side-Enterprise-Annotated-Edition/dp/0071462228/ref=sr_1_1?ie=UTF8&qid=1350075633&sr=8-1&keywords=the+human+side+of+enterprise

I had this problem when I broke my wrist. It turns out that it is pretty easy for your brain to learn to type one-handed if you simply use a special shift key to make each half of your keyboard be a mirror image of the other half. This can be accomplished in software, using the space key as the special shift, but there is a patent on the technique, and software drivers that used to be available are gone. You'll learn this way faster than any of the chorded keyboards. I have found the Matias Keyboard, which implements this technique in a hardware keyboard, to be a great solution. It's not cheap, but it works. http://www.matias.ca/halfkeyboard/index.php?refID=7

Depends upon what you want to measure, especially the frequency. I would start with a search for used equipment at HSC (http://www.halted.com).