[wlesieutre]

I think the argument is that you spend energy to start your fingers moving and then you spend more energy to make them stop. But at least the way I type, what I think I'm doing is expending as much energy as needed to make the key bottom out, and no more energy than that.

I can buy the extra energy cost for walking because gravity is putting some force on there and you'd expend energy to counterbalance it versus just letting the ground push back.

But your fingers have exactly as much force as you put behind them yourself, so I don't know what's up with the finger-slammers. They totally exist though.

I was probably reaching with the foot-stompers comparison. Seems like a similar result, but the causes may well be unrelated.

[iainmerrick]

I think what I’m saying is, to try to use your terms: small precise movements can be more tiring than bigger looser movements, because they require strong muscular control.

And, I’d argue, keyboards with deeper travel require less precise movements. You can rest your fingers on the keys so you know where you are, and it takes a comfortable longish movement to press a key rather than a tiny precise movement.

[hvidgaard]

If we ignore the Apple keyboard for a moment, with DIY mechanical keyboards, you can customize travel length, travel resistance, and click. Getting the force and travel length correct, for me at least, mean I spend significantly less energy typing. My fingers and lower arms are tired if I'm using a regular keyboard for an hour.

Perhaps the optimum is not either extreme. Not an Apple like keyboard with almost zero travel, and not a keyboard from the 5$ bin, but something in between. And it's not the same for everyone.

[iainmerrick]

Yes, that sounds right.

Personally, I quickly got used to Apple’s first “chiclet” laptop keyboards, which had pretty low travel, and actually enjoyed them. But I really have a very hard time with the latest generation.