in reply to
This place has historically been more tolerant of beginners and their questions
Time passes. There was a time noone at Perlmonks had seen a question already a hundred times. But unless people permanently leave Perlmonks after a year or so, we will get more and more people who see the same questions over and over and over again (or worse, the same bad answers). There will come a moment those people will wonder "what's the point of archiving posts, or writing documentation, if noone is going to bother reading them"?
Note that this isn't a Perlmonks, or even a Perl specific issue. It happens everywhere. The only solution I see is that you have to leave as soon as the question "I have two files, I want to print all lines from the second file that are in the first" doesn't sound a like new and exciting problem anymore.