ArcGIS does not prompt you when you save your edits! Especially if you don’t want to save changes on a certain layer, ie. if you altered something by mistake! If you have the option to save "what" layers, you'd know if there was something that was NOT supposed to be saved! This has caused me alot of grief. Coming from a Mapinfo background, it would ask "What layers do you want to save?" AT LEAST GIVE US THE OPTION IN OUR INDIVIDUAL SETUP TO DO THIS!!! This to me is a basic request!