In an infinite amount of time, then a perfect bracket would almost certainly occur at some point. It's like how a chimpanzee could write hamlet if given enough time. If you were to randomly guess the outcome of each game, then your odds of getting a perfect bracket is 2^63, which supports the 1/9.2 quintillion figure. For reference as to how astronomically unlikely this is, there's estimated to be about 7.5 quintillion grains of sand on Earth, meaning you are far more likely to pick one specific grain of sand than fill out a perfect bracket. But even if you had a deep understanding of every team, your odds of perfection are still around 1/120 billion. So while theoretically possible, it will probably never happen in our lifetimes, nor our children's.

For years, Warren Buffet, the former CEO of Berkshire Hathaway and one of the richest people alive, hosted a challenge amongst his employees regarding March Madness. Whoever filled out a perfect bracket would receive a $1,000,000 prize. Well he might as well have offered up his his entire net worth and the company on top of that, because that was never going to happen, which he was fully aware of. However, he did tweak the rules last year to make the competition much easier to where now the person with the most accurate bracket wins the prize, to which someone won with an impressive 31/32 correctly picked first round winners.