A few weeks ago, I had a chat with my daughter who's planning to study cs.
"Dad, how are things going?"
"Got a problem: Google announced SyntaxNet claimed to be world's no 1."
"Why a problem?"
"Well if they are no 1, where am I?"
"No 2?"
"No, I don't know who is no 1, but I have never seen a system beating ours. I might just as well be no 0."
"Brilliant, I like that! Then stay in no 0, and let others fight for no 1. ....... In my data structure, I always start with 0 any way."