on CSI torch

Doesn't it make you wonder... why the CSI guys are always figuring out a crime scene with small little torches... its like... 'heck why dont you just turn on the light!!' Whether its outdoors or indoors, they always arrive when it is that it's dimmest... and out comes the lil torch... and they go hunting for clues with it... i would probably turn blind by the time they are done!