Yes, there is very little that can be known for absolute certain. Life is a matter of probabilities. That's why a preliminary study of say 20 people is not considered very reliable and anecdotal evidence even less so. Large sample sizes are necessary to learn much of anything. And yes, no matter how large the sample, that Black Swan might still be out there.
Just to note though with regard to your marble example. It's highly optomistic. The world is a great deal messier than that. Chances are that you'd have no way of knowing even that all of the marbles had to be either black or white. There's a world of color possibilities out there.
Just to note though with regard to your marble example. It's highly optomistic. The world is a great deal messier than that. Chances are that you'd have no way of knowing even that all of the marbles had to be either black or white. There's a world of color possibilities out there.
If there is a god, I want to believe that there is a god. If there is not a god, I want to believe that there is no god.