Actually though, it doesn't seem to be too much of a stretch to use an Android phone as your internet-facing computer. Probably mostly an academic (hah!) concern though, as you point out.
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Some of us would rather die attempting to do something meaningful.
There are plenty of meaningful things to do here on Earth.
How many miles-per-gas-turbine does it get and how many gas turbines are needed to fill the tank?
That number is so misleading. We really want to be talking in gas-turbines-per-mile so we can make a meaningful comparison between vehicles.
What's the point in teaching a 200 person class? You can't interact with them at all
On the contrary, I've seen it done successfully in calculus courses. It of course involved doing something other than just talking at them for an hour, which is what 95+% of these things end up being, but it is not impossible.
Computers only help out in crazy high level classes where you have to start doing things like matrix manipulations, etc.
That's not exactly 'crazy high level'. Matrix Algebra is usually a sophomore level class, and a watered down one at that.
"I don't believe in sweeping social change being manifested by one person, unless he has an atomic weapon." -- Howard Chaykin