cognitive-load 5

This is surprising because… well, we’re just sitting and the vehicle’s doing the work, right? But: Vehicles accelerate, brake, bump, turn, vibrate, … and our muscles micro-adjust continously so we sit upright. Over hours hours, that’s a lot of energy. We feel like we’re still. But the inner-ear fluids, eyes, etc. constantly get feedback about motion. That mentally drains us (and causes motion sickness). Noise from vehicles, traffic, … triggers cortisol, a stress hormone. That drains us. Sitting in one place restricts blood flow and it pools in our legs, making the heart work harder. In flights, the air pressure is low, lowering oxygen levels. The dehydration thickens our blood, making pumping harder. What helps is: ...

Cut and paste has become easier. So we make less effort to understand. We don’t need to. Like when we pay less attention if we’re recording a lecture. Solution? I suggest the Tunnel in the Sky strategy. Rod Walker is going for survival training on an alien planet, and asks his sister, Captain Walker… “Uh, Sis, what sort of gun should I carry?” “Huh? Why the deuce do you want a gun?” ...

Angry or negative people can be bad for your brain.

The seven plus or minus two rule. That’s all your brain can remember.

I always felt using voice to communicate with computers was a bad idea. In my case, it’s more because speaking takes up a lot of energy. But looks like it takes up a lot of thought power as well. Maybe speech recognition is not such a good idea.