 So there was research burgeoning on lots of fronts in the middle of the 20th century, and then it kind of consolidated and came together with this creation of Dali. I think what you just referred to is this concept of genomic equivalence. That's right. Right. And the phenomenon of genomic equivalence was surprising. In other words, it was suspected, but we didn't realize that the DNA in all cells of our body is identical. Once you...