The thing that always annoyed me with the last 3 characters question is that it assumes everyone knows everything. Relevant XKCD: https://xkcd.com/1053/ https:/

The thing that always annoyed me with the last 3 characters question is that it assumes everyone knows everything. Relevant XKCD: https://xkcd.com/1053/ https://xkcd.com/1053/ The noob clearly thought extensions are always 3 characters because that's the only thing they've been exposed to. They didn't know "how do I get the last 3 characters in a filename?" and "how do I get a file extension?" are different questions. It may not have occurred to them to ask how to get the extension, and to take it further, maybe they don't know everything after the . is called an extension.