Many people me being one of them can get pretty confused when told that the relationship between two factors doesnt show cause and effect.
Surely if more ice creams are sold on hot days then it shows that the heat makes people buy ice creams to keep themselves cool….right?.. unfortunatly not. all it shows is there seems to be a relationship between the two things. but as for causeation it could be because there happens to be a sale on ice creams on the same day it just happens to be hot.
Also if we were to infact use correlation as a way of finding the cause of something, we would be able to do it with any to factors. this would ofcorse mean that wild theories would be made like everyone who gets a girlfriend buys toilet rolls. this would lead to mass amounts of toilet rolls being bought by single guys. when really its just a case of everyone buys toilet rolls not just people with girlfriends.
in conclusion its clear that correlation is too simple as it cuts out to many factors to find causation.