[40four]

This really makes my head hurt, haha. I've always heard the 7 shuffles to be randomized. Great. But if I shuffle one more time it's back to where I started? How does that makes sense?!

Of course, this is dependent on perfect shuffles, which I'm sure I never achieve. Maybe the 'seven shuffles to randomize' calculation takes into account the 'human' nature of shuffling during a game? It is almost a sure thing the deck will never be split perfectly in half, and a perfect faro shuffle achieved.

Someone else mentioned that it depends on if it's an 'in' or an 'out' riffle as well, so I read the wiki page. The basically tells me you should always try to do an 'in' shuffle, I will have to start looking out for this :)

[taejo]

Two different meanings of perfect are being used. For eight "perfect" riffles to return to the starting order, you've got to split the deck perfectly in half, and then drop one card from one half, then one from the other, and so on alternating. For perfect randomness, choose at random which half to drop a card from each time.