I would include that can be done in 30 seconds in the category of 'easy challenges', even if it would be quite hard for most people. Easiness is relative.
I agree. I tried to avoid phrasing it as "hard", instead going with "complex". What we were doing would have been extremely difficult for a lot of other students I know, but weren't very difficult for us.
The Trouble with Bright Girls (article @ the Huffington Post)
Excerpt:
The topic of this article seems to relate to several common Less Wrong issues: the nature of human intelligence, and the gender imbalance among LW readers.
I'm not sure how much credence I give to the proposed explanation of the difference in mindsets. It may well have to do with socialization and feedback, but the specific description of feedback that is presented seems a bit too much of a "just-so story" to me. The difference itself is fascinating, though, and I hope more is done to further our understanding of it.