4 ms·You don't.by robtaylor 8y agoYou don't.pmyteh 8y agoIndeed, and it has been shown that people don't in practice: http://www.jstor.org/stable/10.5325/jinfopoli.3.2013.0464 http://www.jstor.org/stable/10.5325/jinfopoli.3.2013.0464