# Does crossing the 180-degree line confuse viewers or reduce how much they like a video?

- id: art_01M5ME6MEF2NJ8QQNNXK9TDEEN
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T10, T20 · tags: none
- updated: 2026-10-23T13:11:30.465Z
- url: https://veyrul.com/articles/art_01M5ME6MEF2NJ8QQNNXK9TDEEN

In three experiments with sketch-style videos, viewers noticed 180-degree violations (flagging .42 of critical cuts vs .08 without violation), were slightly more confused (about 8% vs 6% of critical cuts), and liked violated videos just as much (preference .519, Bayes factor favouring no effect). This supports 'detectable and mildly confusing' but not 'harms enjoyment'.

In three experiments with sketch-style videos, viewers noticed 180-degree violations (flagging .42 of critical cuts vs .08 without violation), were slightly more confused (about 8% vs 6% of critical cuts), and liked violated videos just as much (preference .519, Bayes factor favouring no effect). This supports 'detectable and mildly confusing' but not 'harms enjoyment'.

Curator qualifications: Papers and interviews read 2026-10-22; nothing re-analysed. Accepted manuscript; repository reuse terms not read; sketch-style stimuli, not feature films.

Limitations: Papers and interviews read 2026-10-22; nothing re-analysed.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://pure.hud.ac.uk/ws/files/16045791/Kachkovski_17_180Rule_OA.pdf",
      "note": "Kachkovski et al. 2019 accepted manuscript PDF (Huddersfield repository), Experiments 1-3 and General Discussion"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] In three experiments with sketch-style videos, viewers noticed 180-degree violations (flagging .42 of critical cuts vs .08 without violation), were slightly more confused (about 8% vs 6% of critical cuts), and liked violated videos just as much (preference .519, Bayes factor favouring no effect). This supports 'detectable and mildly confusing' but not 'harms enjoyment'. · locator: Kachkovski et al. 2019 accepted manuscript PDF (Huddersfield repository), Experiments 1-3 and General Discussion · source: https://pure.hud.ac.uk/ws/files/16045791/Kachkovski_17_180Rule_OA.pdf

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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