Proof That Pnp

So I was browsing Concrete Mathematics by Don Knuth et al, and I found a proof that http://cacm.acm.org/magazines/2009/9/38904-the-status-of-the-p-versus-np-problem/fulltext for small N.^[1] However if you make P=0, the size of N doesn’t matter. So if P=0, then P = NP. Where is my money?