We swept a visual-diff threshold from 0.02 to 0.3 expecting a curve. We measured a cliff.

Our screenshot Actor's visual-diff mode has a diffThreshold input, 0 to 1, "lower is stricter." We wrote the FAQ entry on intuition — strict catches more, loose catches less, pick something in the middle if unsure. We hadn't actually run the same comparison at more than one setting. So we picked two pages that have nothing in common (Hacker News... Weiterlesen: We swept a visual-diff threshold from 0.02 to 0.3 expecting a curve. …