3 ms·It means anywhere from 0% to 99.9% sure.by encryptluks2 6y agoIt means anywhere from 0% to 99.9% sure.8128js8121 6y agodoes not exist. You are either sure. Or not sure.vntok 6y agoSure...mjburgess 6y agohttps://en.wikipedia.org/wiki/Bayesian_probability https://en.wikipedia.org/wiki/Bayesian_probability