Want to make your brain explode? Watch this video about the Bayesian trap.
At first, this sounds ridiculous, but because this guy has a lot of patience, it really starts to make sense.
The sucky part is I don’t know if I would ever be able to actually properly use that equation because my poor brain goes splat at the attempt at calculating these probabilities. But what I can do is if I ever get told I have a horrible disease, I’ll get a second opinion from an independent lab before truly panicking.