Corrections

Retracted

• The HaPPY code’s 0.15 “threshold”: a crossing produced by finite size.
• H-0001’s first topology effect: a confound.
• H-0003’s best-fit distinguishability.

Withdrawn

• “n/2 is a fingerprint of purity.”
• “The deficit is a leak.”
• The data-processing argument for logs.
• “Haar is a limit of islands.”
• “P1 certifies scrambling.”
• The advice to insert repeats.
• “Looseness equals coding inefficiency.”
• The proof’s extension to a negative cosmological constant.
• “Smooth against sharp fragility” as a single statistic.

Found to be known

Γ(0) for the sonic horizon; the Page-time numbers; the strict bound λ_L < 2α; the static γ bound and its null-energy reading; seed replay against steganography; the brain decoding curve; the numerics of Λ-blindness; and others.