Up until not long time ago, I used to use text editors (notepad/notepad++/etc) as my main editor for my program in C++ and the likes, and I used to either remember stuff, or having my own cheetsheet, or the books at my disposal for any quick reference, even books in electronic form weren’t searchable as today (basically images in pdf with no OCR functionality), and later when some tools are out that will convert books to be searchable it was like a breakthrough for me, “you mean I can quickly search for a text in 400+ pages?! Wow?!!”, even for other domains like electronics, none of Rpi or arduino existed, for anything we used to use PIC controllers and program them then dump the code with dumping kit, while now you just load python on Rpi and call it a day. We used to have arguments which one is better MASM or NASM as an assembler, just like flame wars now for React vs Vue, and I’m not even that old, all of that technological advancement happened primarily in the past decade!