Theory or Practice

I read Japanese famous doctor"TAKAGI KENKICHI"'s non-fiction story. He investigated the couse of beriberi(KAKKE disease) by practical process(positivism). But at that time doctors who learn theoritical medical science rather than  practical process. So the result of Dr TAKAGI was rejected by those theoritical type doctors. His results were applaused by Britain.This episode teach us the necessity of many-sided thinking.