Because the subject is still to immature.
They never stop to ask directions.
Because they can't stop shooting themselves in the foot.
Ooops... wrong sub.
They just wanna be loved by ewe. Made up this joke/pun at work the other day (I'm sure I'm not the first), decided to subject you all to it. All apologies to shepherds who are not physical with your sheep.
A: Because they research everything.
Wookiepedia
9 out of 10 zombies said "braaaaiiiiinnnnssss" number 10 ate the researcher.