3blue1brown recently felt the need to add a supplementary video to its Grover’s algorithm introduction. Apparently, a lot of people have been confused by what I believe is basically just the logical structure of the concept, or why this algorithm is interesting and surprising in the first place. For someone who only knows about classical computing and a little about algorithm complexity, the simplest way to get an intuition about Grover’s algorithm might be to first consider this: ...

I have a friend who wanted to have a quick idea about whether he should use classes and objects for his project. Of course I told him that it depends.. on many aspects. He says that he doesn’t really like tutorials, so here I want to propose something more compact: the skeleton of a Pacman game, just the most basic concepts, without any bells and whistles (so of course not playable, although almost runnable). ...