The idea is so simple, it's either super brilliant or we're all very crazy and stupid. Instead of solving this enormous, mysterious question mark of exactly how smell works, Andreas just ignored the question mark. He built the nano nose to recognize patterns, showed it what it needed to recognize for the test, and then he let the nano nose teach itself how to recognize the smells. And when you've reached the same statistical results, one involving dogs, one involving machines,. At that point, you can basically say, okay, two things are doing the same thing, two the limit of my understanding.