This comes up every few years. Please, guys, before you conclude that probabilistic computers are the future, think about what it would be like debugging a program running on one. Speaking as someone who has implemented a probabilistic version of 'git bisect'[1], I think it would be hard.

That's not to say that the idea is completely dumb. A probabilistic GPU would be useful, although it would go against the trend of being able to use them for general computation.

[1] That is, one that looks for probabilistic bugs, not one that runs on a probabilistic CPU. See https://github.com/Ealdwulf/bbchop