Two.Sigma

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Run #784

done rubric v1 session 79142930 gemini-3.7-flash 2026-09-21 02:21
Session in Sessions →

The recording

What the student sent the question as it arrived, then each reading of it

Typed by the student

Narration

The audit's reading of the question:

Narration

Transcript

Not used by the HEARD criteria — Only 62 characters of speech after cleaning (100 were the language-detection artefact) — too little to judge teaching from.

Read it no speaker labels — tutor and student run together

The use of written or spoken comments. Thank you for watching.

What the student sent the question as it arrived, then each reading of it

Typed by the student

Narration

The audit's reading of the question:

Narration

Transcript

Not used by the HEARD criteria — Only 62 characters of speech after cleaning (100 were the language-detection artefact) — too little to judge teaching from.

Read it no speaker labels — tutor and student run together

The use of written or spoken comments. Thank you for watching.

Review team

no_issue

Product AI

nothing found

teaching Yes · mistakes No · satisfactory Yes

Each verdict takes your own. Yours is stored against the stack's, so “where is it wrong most often” is a question with an answer.

  1. Work is the right way up Writing is inverted at 180 degrees
    In frames 4 to 7, the written word 'Narration' is oriented upside-down (180 degrees).
    seen · 95% confident
  2. Your view
  3. Writing is legible at video size Camera is overexposed and almost no content is written
    Frames 2 and 3 are completely overexposed/blown out white, frames 4 and 5 are blurry, and only a single word is scribbled in frames 6 and 7.
    seen · 95% confident
  4. Your view
  5. The work fills the frame Camera is poorly framed and switched to black screen
    Frames 1, 8, and 9 show a blank black screen, while frames 2 to 7 capture part of the paper along with a bedsheet.
    seen · 90% confident
  6. Your view
  7. Nothing distracting in shot Floral bedsheet visible alongside writing sheet
    A red floral patterned fabric is prominently visible on the right side in frames 2 through 7.
    seen · 90% confident
  8. Your view
  9. The student's problem is established No question is presented or stated
    Only a generic topic label 'Narration' is visible across frames 1, 6, 7, 8, and 9 with no actual problem or question shown.
    seen · 95% confident
  10. Your view
  11. Work proceeds in followable steps No structured steps or explanations shown
    Across all frames, only the single word 'Narration' is written in frames 6-7 before returning to a black screen in frames 8-9.
    seen · 95% confident
  12. Your view
  13. It reaches an answer No working or solution is provided
    No content or problem solving is attempted throughout the frames, ending on a blank screen in frames 8 and 9.
    seen · 95% confident
  14. Your view
  15. Something was actually written Not applicable to a camera session
    measured
  16. The concept is named before the working Not assessed
    Only 62 characters of speech after cleaning (100 were the language-detection artefact) — too little to judge teaching from.
    heard
  17. Your view
  18. Explained rather than jumped to the answer Not assessed
    Only 62 characters of speech after cleaning (100 were the language-detection artefact) — too little to judge teaching from.
    heard
  19. Your view
  20. Solved step by step, not in one leap Not assessed
    Only 62 characters of speech after cleaning (100 were the language-detection artefact) — too little to judge teaching from.
    heard
  21. Your view
  22. The session opens properly Not assessed
    Only 62 characters of speech after cleaning (100 were the language-detection artefact) — too little to judge teaching from.
    heard
  23. Your view
  24. No long dead air 0 gaps over 6.0s, 0s total (0% of the session), longest 0s
    Silence is below -35.0dB — a crude measure on a phone microphone, so treat a low count as weak evidence rather than proof the tutor was talking.
    measured
  25. Your view
Observations judged, but not counted as the lab objecting
  1. The camera holds still picture moves 40.0 on average between keyframes, 2.7 hard jumps/min
    Consistent with the camera being handheld — a stand would remove this entirely. A handheld phone measured 35.1. No steady-camera session has been measured yet, so the lower band is a guess.
    Not counted: Measured over 183 known-bad and 29 known-good camera sessions (2026-09-21): raised on 87% of the bad and 86% of the good, and the motion distributions are the same shape — median frame difference 25 on the bad set, 27 on the good. No threshold on this number separates them, so it is reported and not counted.
    measured
  2. Your view
  3. Exposure is usable average brightness 115.6, 9.6% of frame very dark, 13.8% blown out
    Blown-out share is reported but not judged: the subject is white paper, so a good session measures 11-24% there too.
    Not counted: Same two sets: it raised 6 of 183 known-bad and 2 of 29 known-good sessions. Both too few to mean anything, and the brightness distributions overlap almost exactly. The earlier reading that it 'fires more on clean sessions' was two sessions out of twenty-nine — noise, not an inverted rule.
    measured
  4. Your view
  5. Understanding of the concept is checked Not assessed
    Only 62 characters of speech after cleaning (100 were the language-detection artefact) — too little to judge teaching from.
    Not counted: Raised on 87% of known-bad and 80% of known-good sessions. The criterion is honest about why in its own `why`: the transcript has no speaker labels, so a real check and a rhetorical 'ok?' are often indistinguishable, and the bar ends up one almost no session clears. Still judged and shown, because reading it beside a recording is how it gets better.
    heard
  6. Your view

Measured

Duration67s (1.1 min)
Video1280×800 @ 10.0fps
Audio trackyes
Shot changes
Dead air0 gaps ≥6.0s · 0s total · longest 0.0s
Lumaavg 115.6 · min · max
Mediumcamera 51.3% flat background
Content written1.11% → 2.82% (+74.16)
Transcript 62 characters of speech
Frames9

What the model returned verbatim

{
  "findings": [
    {"key": "orientation", "verdict": "bad", "headline": "Writing is inverted at 180 degrees", "evidence": "In frames 4 to 7, the written word 'Narration' is oriented upside-down (180 degrees).", "confidence": 0.95},
    {"key": "legibility", "verdict": "bad", "headline": "Camera is overexposed and almost no content is written", "evidence": "Frames 2 and 3 are completely overexposed/blown out white, frames 4 and 5 are blurry, and only a single word is scribbled in frames 6 and 7.", "confidence": 0.95},
    {"key": "framing", "verdict": "bad", "headline": "Camera is poorly framed and switched to black screen", "evidence": "Frames 1, 8, and 9 show a blank black screen, while frames 2 to 7 capture part of the paper along with a bedsheet.", "confidence": 0.9},
    {"key": "workspace", "verdict": "weak", "headline": "Floral bedsheet visible alongside writing sheet", "evidence": "A red floral patterned fabric is prominently visible on the right side in frames 2 through 7.", "confidence": 0.9},
    {"key": "question_captured", "verdict": "bad", "headline": "No question is presented or stated", "evidence": "Only a generic topic label 'Narration' is visible across frames 1, 6, 7, 8, and 9 with no actual problem or question shown.", "confidence": 0.95},
    {"key": "structure", "verdict": "bad", "headline": "No structured steps or explanations shown", "evidence": "Across all frames, only the single word 'Narration' is written in frames 6-7 before returning to a black screen in frames 8-9.", "confidence": 0.95},
    {"key": "completion", "verdict": "bad", "headline": "No working or solution is provided", "evidence": "No content or problem solving is attempted throughout the frames, ending on a blank screen in frames 8 and 9.", "confidence": 0.95}
  ]
}

Frames in order, one every ~7s

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