Having respect of certain things is healthy, and learning things under (expert) supervision is generally effective and safe. Think about cars or electricity. Mo

Having respect of certain things is healthy, and learning things under (expert) supervision is generally effective and safe. Think about cars or electricity. Most societies have some kind of mandatory training for both. Do most hackers have the patience for learning the basics, i.e. some somewhat complicated maths that could take years to learn? No, most of the time it's programmers, and we tend to just start writing code. That's what "don't roll your own crypto" means. Nobody's saying "don't learn about Galois field" or "don't run through cryptopals". The Dunning-Kruger effect is real. I've seen broken crypto getting shipped. Or people releasing dangerous crypto under "hey, I made this perfectly functional library that even has documentation how to use it, but it's just a learning project". So while that's still happening, I'm fine with hearing "don't roll your own crypto" ad nauseum.