I really like this analogy - very clear, and it gets at the essence of what's going on here. Reminds me of this similar abstract explanation of zero-knowledge

I really like this analogy - very clear, and it gets at the essence of what's going on here. Reminds me of this similar abstract explanation of zero-knowledge proofs: http://en.wikipedia.org/wiki/Zero-knowledge_proof#Abstract_example http://en.wikipedia.org/wiki/Zero-knowledge_proof#Abstract_e...