There’s a dirty little secret in programming: generating truly random numbers is tough. When are random numbers really random?
Nearly everybody plays a computer game such as Solitaire from time to time. Have you ever had this deja vu feeling you’ve played this same game before? Did that initial “deal” look unsettlingly familiar?
Have you ever yelled at a computer game, “who shuffled this?”
My irritation with this led to remembering all the nasty little complications we’ll “overview” in this article.
There’s a reason for “bad shuffles.” To make each game unique, computers depend on random numbers.
If you don’t play computer games, you still probably realize security passwords are also just random numbers and letters. There’s a more serious side to this discussion. Random numbers are essential to secure password generation, encryption, and even national security.
The core idea to a series of random numbers is unpredictability. Knowing what one number is, should give us no clue what the next number will be.
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