This is fun, esoteric programming languages can help you think about things differently, and often change your perspective. But I think one of the central conc

This is fun, esoteric programming languages can help you think about things differently, and often change your perspective. But I think one of the central conceits is wrong? They claim folders take up zero space on disk. I assume they're pulling my leg. I'm not a Windows expert by any stretch, there are certainly accounting rules that I don't know, but things that persist across reboots and travel with the disk between computers definitely are stored somewhere on the disk.