Nearly every machine with any complexity greater than a light switch comes with a manual. As the number of features of a system grows, it becomes less and less feasible to design user interfaces that expose all of those features so intuitively that most people get them instantly. In fact large software with tons of features in UI have manuals and need books to master. Featurefull software requires documentation. And so the question isn't whether one piece of software requires documentation to use or not, instead it's whether that pieces of software can do more or less, and whether someone bothered to write a doc. In Linux'es case someone typically bothered to do it. There is an M to RTF. On Windows on the other hand, if something obvious doesn't work, or it isn't obvious, you're often stuck with hearsay or worse - banging your head against the wall. It's quite alright for people to prefer to stick with what they know whether it provides the easiest way to do something or not. But let's not get confused that RTFM is a bad thing. RTFM means there's an M, it means the M will help, it means that the software has the capability you need, and likely more than you need. ☺️