Fact Snacks!

killing-spiders-makes-their-gene-pool-much

Killing spiders makes their gene pool much sneakier. 

image

If zombies attacked tomorrow and killed off the slowest, dumbest people, the human race would become faster and smarter. 

Therefore, if you smash a spider, you likely just got rid of the dumbest one in your house, which allows the smarter spiders hiding in the shadows to hook up and make lots of baby spider geniuses.

image

(Source)