Well, I wouldn't step in front of that train for the same reason that I wouldn't carelessly drag that icon to the trash can: not because I take the icon literally -- the file is not literally blue or rectangular -- but I do take it seriously.
Ne bih stao pred taj vlak iz istog razloga zbog kojeg ne bih neoprezno tu ikonicu stavio u koš za smeće: ne zato što ikonicu smatram doslovno -- datoteka nije doslovno plava ili pravokutna -- ali ju shvaćam ozbiljno.