The file tree is another thing I can't understand, sometimes when I help coworkers with their issues they will have their super-modern IDE open and I tell them to take a look at `foobar.c' or whatever concrete file and they will start browsing that tiny list with those little icons. Come on man, I told you its name, just type it in! If I want to look at files I have dired, which is a first-class solution and the focus of my attention, I don't need some tiny crippled list sitting on the side all day doing nothing most of the time but when it does its job it does it badly.