Besides "behaviour in time", print debugging is effective because it's typically an extract of the most interesting for programmer things. I have a debugger win

Besides "behaviour in time", print debugging is effective because it's typically an extract of the most interesting for programmer things. I have a debugger window open this very moment and I can see about a hundred lines with various information about one structure, but I'm interested only in two (and I have to rerun this several times, because state got corrupted somewhere earlier).