Because intelligence is not related to Wisdom.
They read and understand the lines really well but can't read between them.
'Book' smarts does not mean common sense....
Common sense is quite different.....
Stupidity is first step towards knowledge...and hence towards intelligence!!! The key is they dont mind showing their stupidity and hence they keep on learning....
My niece is a genius, but lacks the sense to close the window because it is raining. I assume it is because she is simply too involved with her thoughts, to really notice the reality around her.
Street smarts and common sense require engaging other people and enjoying life. Many intelligent people find this challenging, so they never learn.
My brother is like that, I think he is so very intelligent his brain doesn't have space for things like common sense and he's learnt over the years the more helpless he is in certain areas the more people do for him, so he's never had to acquire certain skills.
I think the saddest part is the harm it does him, it ends up giving him problems that could have been prevented, I love my brother dearly but I could cheerfully wring his neck at times! It just doesn't even occur to him do to certain things, when there is nobody about who will do the stuff he can't be bothered with it ends up causing massive problems, he doesn't actually tend to ask for help when things have got out of hand by the time I or one of his friends is aware of the problem it can be a nightmare to sort out.
Common sense is a sense not common to all.
Sorry...(hangs head in shame)
I am not
Not stupid :(
because successful person dont need intelligence they need good luck