Most of us don’t roll dice underwater so I think this video is a little overblown, but it’s pretty interesting nonetheless.
Originally shared by Yonatan Zunger
For all of you who have ever suspected that some of your dice are in fact unlucky and conspiring against you, here’s how you test it and find out. It turns out that solid dice are often made incredibly sloppily, and will in fact have favorite numbers; he dissects one at the end to show just what a mess they are on the inside. With transparent dice, you can’t get away with that, and so they’re more likely to be fair.
Whether that’s a good or a bad thing depends on just how the die is unfair, of course. And even a natural 1 can have interesting effects in the hands of the right GM: http://imgur.com/gallery/cxOTWSE
h/t Chris Stehlik