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Green Card Lottery Judgment Favors Mathematical Randomness
guusbosman writes "Yesterday a district court in Washington, D.C. issued its ruling in a case that boiled down to the definition of 'strictly random.' In the 2011 drawing of the U.S. 'Green Card Lottery,' a computer programming error was made and two weeks after the official drawing of the lottery the Department of State closed the website and voided the results. A lawsuit sought an injunction claiming that, while the process was not mathematically random, it was random in the dictionary definition of 'without definite aim, direction, rule or method.' The court, analyzing language from the State Department's regulations, and examples from laws on casinos and the like, rejected that and came out in favor of a mathematical definition of randomness. The lottery is voided and the results of the new drawing came out today at noon EST."
The problem was that the buggy algorithm only randomly selected entries that were submitted during the first two days that the submission system was open. The law specifies that entries are to be selected "in a random order," which implies (at least to the judge) that all of the entries must be shuffled in, and given equal probability of being chosen.