The typing speed absolutely is a bottleneck --- the more time spent typing, the less time spent thinking. Have you ever experienced times when you lost your train of thought because you were busy writing it down? That's what faster typing will avoid. It's true that the average typing speed will be low, but the higher your burst speed, the sooner you will return to thinking after each thought that needs to be written down.
> We are not machines who can do only one thing at a time
I thought most machines could do multiple things at once?
Humans barely walk and talk at the same time, and stumble much more likely than when not talking.
As someone who plays piano, you have to spend years perfecting it so it becomes automatic enough to offload your brain and only then you can improvise while playing. Your movements have migrated to a "fast" part of your brain. If you record yourself and listen to it, it's a whole different thing, you feel as if your ears were blocked to the melody, only listening enough to improvise the next key, and so on.
I am pretty sure, but to lazy to find sources which I know there are plenty, that Multitasking always yields worse quality results than doing one task. If you don't care about quality, then why don't you practice your dance moves as you write and think, as well?
If you're not doing something 100%, then you're half-assing two things.
Kind of like build time. Even with only a small fraction of time spent compiling, it can distract you and make it less enjoyable to code vs. seeing your changes instantly.
This is a good point. I agree that going slower improves writing quality, in most cases.
But there are often times where I'm struck with a particularly well-crystallized thought, and typing speed becomes a huge bottleneck in recording its structure before the thought dissolves back into the ether of conceptual soup in my brain.
That's only when you need to make an effort to think about the keys you are pressing. When you have assimiliated the keyboard layout it becomes so automatic and natural that you don't even think about it.
