So, would any intentionally crafted cached self count for his? Is a cached self formed for the purpose of education fundamentally different from one formed for anything else? I don't really see what you're going for here.

Well, the education system isn't like 'real life' in a lot of ways. So it's easier to create cached selves that aren't useful anywhere else, and then accidentally start using them in other ways.

So, I'm not really sure what the point of this post is other than bringing up a specific type of cached self.

I hadn't noticed I was doing it until recently, which means there are likely to be others who do it, maybe at school, maybe at work, and who also haven't noticed yet. And it hasn't been harmless for me so far.