Odd question that at first seemed to have an obvious answer: no. It all started when I realized that my friend is horrible at shuffling cards. They fall in large packets such that they fall in layers of unshuffled cards, rather than all of the cards being randomized. Then I realized to myself that no matter how they are shuffled, they are still as random as being shuffled 100 times... aren't they? Is there any way to measure how "well shuffled" cards are, or more generally, how random something is?