I think that the first lesson that he should learn is the need for regular backups. In fact, I am not even sure he meant to use git ("I hadn't commited any of

I think that the first lesson that he should learn is the need for regular backups. In fact, I am not even sure he meant to use git ("I hadn't commited any of them to any repository"). If it that's the case, I would understand why he did such a mistake: * Open the folder in VS Code * Explore around, discover the Git tab on the left, "This workspace isn't yet under git source control", press the button * "Whops, I didn't want to do this", check around and see that there is a button to "clean the changes" * Destroy 5000 files by mistake. In any case, I don't understand why developer oriented tools rarely take into account the fact that developers too make mistakes, and they should have the ability to undo them. This is especially true with Git, where the UI is in my opinion particularly convoluted and error prone.