Floatingsand

Im no scientist or anything, so please dont be surprised if this post is lacking in a lot of logical things I am missing here, please correct me if that is the case. So ive just logged into this forum and I need help on one of my theories. The only thing I need to know if the following theory is true or not, both logically, and with actual evidence. Ive seen this theory floating around about how with quantum fluctiations, in a theoredically infinite ammount of time, an infinite ammount of completely different things, both big and small, will all happen and infinite ammount of times. Just to confirm, is this true?