Could anyone tell me why expert usually have detailed knowledge of a limited area of a specific domain? Thanks a lot!!!!

Question

anonymous · Answer

“The expert knows more and more about less and less until he knows everything about nothing.”
― Mahatma Gandhi

anonymous · Answer

I hope this document (The illustrated guide to a Ph.D.) can help you =D http://matt.might.net/articles/phd-school-in-pictures/

anonymous · Answer

Basically, because time is limited. We don't have enought years of live to know everything. So, one (assuming that is interested in acquire knowledge) can knows 'a little bit of everything or everything about little bits'. By the way, @fakturk, that's great! hahaha