You know that friend who gives tech advice with the confidence of a senior architect but the logic of a rubber duck? "Just compress it again" is the digital equivalent of "have you tried turning it off and on again" but somehow even more useless. Because yes, Karen, compressing an already compressed file will definitely make it smaller and not just waste everyone's time while the compression algorithm looks at the data and goes "yeah, I already did my job here." The beautiful irony is that zip files are already compressed. Running compression on a compressed file is like trying to squeeze water from a stone, except the stone is already dry and you're just embarrassing yourself. But hey, at least they're trying to help... sort of.