For one thing, because if you're throwing out a world-changing claim, you yourself would like to be sure it is what you think it is. It's an obvious test to do

For one thing, because if you're throwing out a world-changing claim, you yourself would like to be sure it is what you think it is. It's an obvious test to do, so it's quite surprising they didn't do it. Maybe they did and didn't film it, I don't know - but for the trouble of a couple of minutes of time, it's weird not to have it - especially if your method is reproducible.