The Guess et al. (2023) study's null individual-level effects preclude meeting the framing's 10% population-level threshold regardless of aggregation assumptions.

[DEFENSE-REBUT → 049yvk] The framing defines significant causal factor as one whose removal would reduce measured affective polarization growth by at least 10% of the observed change. Guess et al. (2023) found no detectable individual-level effect of algorithmic versus chronological feeds on affective polarization in a sample exceeding 23,000 participants. A null individual-level effect cannot aggregate to a non-null population-level effect; zero multiplied by any population size remains zero. Therefore, The Guess et al. (2023) study's null individual-level effects preclude meeting the framing's 10% population-level threshold regardless of aggregation assumptions. (Warrant: Population-level effects are aggregations of individual-level effects; if the individual-level effect is indistinguishable from zero, no aggregation procedure produces a population-level effect meeting any positive threshold.)

• The framing defines significant causal factor as one whose removal would reduce measured affective polarization growth by at least 10% of the observed change.
• Guess et al. (2023) found no detectable individual-level effect of algorithmic versus chronological feeds on affective polarization in a sample exceeding 23,000 participants.
• A null individual-level effect cannot aggregate to a non-null population-level effect; zero multiplied by any population size remains zero.

These are challenges this argument’s reasoning pattern must still withstand. Answering them on Isonomia strengthens the argument.

• Could a different cause produce the same effect E in this case?Open
• Is there a plausible causal mechanism by which C could bring about E?Open
• How strong is the causal generalization linking C to E? Are there documented cases where C does not produce E?Open
• Are there intervening or confounding factors that could interfere with the causal chain from C to E?Open
• Is the apparent link between C and E merely a post hoc correlation rather than a causal relation?Open

No one has cited this argument yet.

No arguments cite this one yet — no one has built on or contested it. That is an absence of engagement, not a finding of soundness. Build on or contest it on Isonomia to change that.