For me it wasn't a spoiler, and also the video contained more math that I understand than the Wikipedia link (that just was a list of lots of mathematical struc

For me it wasn't a spoiler, and also the video contained more math that I understand than the Wikipedia link (that just was a list of lots of mathematical structures that I don't know anything of, and not part of the computer science curriculum, so I don't expect other hackers to understand them either).