This is what I think. I admit that the line between the main task and the tools is blurry, but usually the difficulty of the tools tends to be proportional to t

This is what I think. I admit that the line between the main task and the tools is blurry, but usually the difficulty of the tools tends to be proportional to the difficulty of the main task. As you said, if it's a simple task done with limited cognitive ability, the tools for it are also likely to be simple. Another point is that while there is an upper limit to how difficult tools are to use, there is no lower limit, so there are always many tools that can be mastered simply. And my view that people overestimate the difficulty of learning them can be shown by this example. If someone made 300 more keyboard shortcuts for a code editor, you'd probably think it's crazy and a mess. But for people learning a foreign language, memorizing 300 completely new words is just everyday life, and it can be done in a day or a few days. Also, this is a long story to tell, but in my experience, it's easier to memorize keyboard shortcuts than foreign language words.