A typical answer on some stackexchange sites including this looks like this. The first half is not directed to the asker at all since I gave to understand in my question that I mostly know how SHA1 works.
It looks like the answerer does not speak directly to me.
- It's unpersonal.
- English is not my native language. While I more or less can slowly read and understand math/crypto text, it's a little hard to me to look fast over a text and find places interesting for me. Reading the whole text to find 1 small paragraph answer to my question is too much overhead, don't you find?
So why it's so common?