I think you're a bit off on what rule of thumb means. Something that's false 1 out of 3 times is not "generally true". If it was a 51/49 split in probability w

I think you're a bit off on what rule of thumb means. Something that's false 1 out of 3 times is not "generally true". If it was a 51/49 split in probability would you still call it a rule of thumb?