"Comparisons between the brain and electronic hardware are also difficult to draw. For example, the issue of 'fanout' demonstrates the complexity of the brain over even today's most sophisticated computers. Fanout refers to the number of connections an element in a network can have to another element of a network. Today's most complicated computers have a fanout factor of about 10. The human brain, however, has a fanout of 10,000.
'We don't have the faintest idea of what machines with that kind of fanout would be like, so inference from the capabilities of present machines to such machines is feeble at best,' notes Holland. 'As Nobel Laureate physicist Murray Gell-Mann says, three orders of magnitude is a new science.'"
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