oh my god! please don't cheat in the challenge. what some of you said is not really 5 sentence but it's every sentence is an extraction of a book. i mean to understand even one of your sentence, they should go and read many books.

so i am still the holder of winner position as what i said was really 5 sentences.

just kidding.... yes, we may need to really know every fundamental to be a successful LDer. ^^
no doubt...