Evidence 01
The direction can be adjustedon screen text · human review pending
Evidence workspace
See what the video supports—and what still needs asking
Inspect speech and on-screen text alongside timecoded visual observations, attention, motion, and hand landmarks. Missing expert judgment is not inferred.
On-screen-text ledger · Missing analysis is not inferred
14
Speech + on-screen text
00
Direct visual observations
351
Visual annotations + derived cues
12
Real model artifacts
00
Interview probes
Ying Zhang / DONGTAI · 2:45 · fe6fba8e2329
Original source · Human review pending
Timecoded source evidence
Evidence 02
Turn on, this is the light, this is the start buttonon screen text · human review pending
Evidence 03
Speed adjustmenton screen text · human review pending
Evidence 04
First you need to grind the valve stem. Second, while grinding the valve stem, you need to grind the middle hole of the housing.on screen text · human review pending
Evidence 05
Clamp the valve stem to be ground on the grinderon screen text · human review pending
Evidence 06
Then select the ground inner bladderon screen text · human review pending
Evidence 07
Corresponding to the thickness of the valve stem and fix it insideon screen text · human review pending
Evidence 08
Then start the grinder and start moving forward or backward to grindon screen text · human review pending
Evidence 09
This is a tapered rodon screen text · human review pending
Evidence 10
When grinding, first fix the rod on the grinder and install the ring on the tapered rodon screen text · human review pending
Evidence 11
First you need to measure its diameter and tap it in when it reaches the size you wanton screen text · human review pending
Evidence 12
Grind the middle hole of the shell and apply abrasive pasteon screen text · human review pending
Evidence 13
The valve stem must be flexible inside the housingon screen text · human review pending
Evidence 14
After installation, measure the stroke and then go to the test bench to check the flow rateon screen text · human review pending
02 · MULTIMODAL EVIDENCE
Visual evidence and machine observations
This separates literal video observations, authored attention, OpenCV-derived motion, and artifacts from models that actually ran. None of these alone establishes expert intent, rationale, quality, or safety.
0Direct visual observations
351Visual annotations + derived cues
12Real model artifacts
Observations and model outputs support what is visible. What it means must be checked with a practitioner or separately cited existing knowledge.
01
Direct observations from the video
Literal descriptions of visible objects, orientation, possible contact, and movement only.
No direct visual observation has yet been admitted to this source bundle. The annotations and derived cues below remain visible, but they do not silently become expert knowledge.
02
Timecoded visual annotations and derived cues
Attention points, motion trails, hand landmarks, and related candidates. Play any card at its source moment.
03
Artifacts from visual models that actually ran
Google · mediapipe-0.10.35:fbc2a30080c3
hand-clip-01.jsonMeta · facebookresearch/sam2@2b90b9f5ceec907a1c18123530e92e794ad901a4
keyframes.jsonclamp-lower-glove-mask.pngclamp-machine-chuck-mask.pngclamp-upper-glove-mask.pngclamp-valve-stem-mask.pnggrind-glove-mask.pnggrind-machine-chuck-mask.pnggrind-valve-stem-mask.pngMeta · facebookresearch/sam2@2b90b9f5ceec907a1c18123530e92e794ad901a4
48000-58000-4fps.json50000-58000-4fps.json90000-100000-4fps.jsonContinue with this source
One source, five connected views
Switching views preserves the same source hash across instruction, analysis, skill structure, evidence, and human review.
01Learning guideLearn the demonstration as a visual procedure02Vision labInspect model outputs, live graph, and teaching visuals03Skill mapExplore process, tools, judgment, and learning
04EvidenceReturn to speech, source text, and observationsYou are here
05Open questionsAnswer knowledge gaps and update the skill graph