If you take 80 people and tell them to randomly play the stock market, buying or selling - you will always have some that succeed and some that fail over the short term.<p>The question is, if the same people who 'succeeded' are put back to the start again and play randomly with a new batch of 80 people - would they still rise to the top, or perhaps this time have worse luck.<p>Comparing this to the rats, the long term testing / new rounds with a new set of 80 rats (including the elite) would help determine whether these rats are the best, or if it was chance.<p>If I understand this correctly, the decision the rat makes is based solely on hearing a certain frequency (pattern of trading emerge), unfortunately even if this is the case - trading by patterns could be extremely risky without the common sense / experience of a real trader to see what is really happening to the market.