Gilbert–Shannon–Reeds model
... that according to the Gilbert–Shannon–Reeds model of probability distribution, a deck of playing cards should be riffled seven times in order to thoroughly randomize it?
... that according to the <b id="mwBwU"><a href="./Gilbert–Shannon–Reeds_model" id="mwBwY" rel="mw:WikiLink" title="Gilbert–Shannon–Reeds model">Gilbert–Shannon–Reeds model</a></b> of <a href="./Probability_distribution" id="mwBwc" rel="mw:WikiLink" title="Probability distribution">probability distribution</a>, a deck of <a href="./Playing_card" id="mwBwg" rel="mw:WikiLink" title="Playing card">playing cards</a> should be riffled seven times in order to thoroughly randomize it?