The point is only misunderstood when someone hears it, before then the point is in a super position where it’s both understood and misunderstood at the same time.

*Octopussies

Yeah, thats what I was using to get 14%.

2billion years is about 2.8 halflives, so I calculated (1/2)^2.8 ~ 0.14.

The lump would still have about 14% uranium still in it. (If my understanding of half-life is correct)