Claude, Deposition Prep.
A walkthrough of Claude's deposition-prep skill showing it is a plain SKILL.md checklist for organizing witness documents, not acquired courtroom judgment.
Claude's deposition-prep skill sounds like it hands the model real courtroom instinct, as if it studied depositions and came back knowing how to corner a witness. It didn't. This video uses deposition-prep as a concrete example to show what a Claude skill is: a folder holding one written checklist that Claude reads and follows in order.
The naive framing, and why it's wrong
The natural assumption is that a skill named "deposition-prep" gave Claude something like judgment. Nothing in the model changes when the skill is added. Delete the skills folder and Claude doesn't forget how to question a witness, because there was no instinct there to lose. It just stops following that one checklist. Deleting the folder and watching nothing get forgotten is the clearest way to see a skill is a specification, not a capability.
What the deposition-prep skill actually contains
A skill is a folder holding a single file, SKILL.md, written in plain language. Deposition-prep's file lays out steps for pulling a witness's documents from the eDiscovery platform, organizing them around the case theory, and surfacing impeachment material. Claude reads that file top to bottom before it starts, then works through it step by step in the order written: pull documents, sort by case theory, flag impeachment material. There's no branching unless the file itself calls for it.
Spec, not instinct
That structure produces a payoff and a limit at the same time. The payoff is a consistently organized outline for every witness. The limit is any question outside those written steps, where Claude is simply off the map. Deposition-prep never taught Claude how to cross-examine anyone; it guarantees that every time it runs, Claude reads the same file and produces the same kind of organized outline.
Why the output alone proves nothing
A sharp outline doesn't prove Claude understood the witness. The checklist can be followed to the letter on a case Claude never really grasped. A thin outline doesn't prove the skill is broken either, it may just be a case the file's fixed structure doesn't fit well. Neither result is evidence of comprehension, only of whether the steps were followed.
Try it yourself
Pick a task you do the same way every time, an outline, a report, a checklist. Ask Claude to write a SKILL.md for it in plain language with ordered steps, then have it read that file back to you and walk through exactly what it will do before doing it. Running this against something you actually repeat is the fastest way to see the mechanism outside the legal example.
Key takeaways
- Deposition-prep is a folder holding one file, SKILL.md, not acquired courtroom judgment.
- Deleting a skill's folder erases nothing Claude "learned," because skills don't add instinct.
- The file's steps are: pull witness documents from eDiscovery, sort by case theory, flag impeachment material.
- The payoff of the skill is a consistent, organized outline every run; the limit is anything the file leaves unwritten.
- Neither a sharp outline nor a thin one proves the model understood the witness or the case.
Who this is for
Anyone evaluating whether a Claude skill can meaningfully support litigation prep work, and anyone who wants a template for turning a document or outline they produce repeatedly into a written, ordered SKILL.md.
Chapters
- 0:00The naive framing: "Claude knows how to prep a deposition"
- 0:10Sounds like courtroom instinct
- 0:19Broken, with a case — delete the folder, nothing is lost
- 0:29The anchor: one file — deposition-prep's single SKILL.md
- 0:47Read it, then follow it in order
- 0:59Spec, not instinct — the payoff and the limit
- 1:10The anchor returns — same file, every run
- 1:22Both directions — neither one is proof
- 1:36Carry-out
- 1:46Your turn
- 1:59Outro
Full transcript(auto-generated, with timestamps)
The naive framing: "Claude knows how to prep a deposition"
[0:00]You guess Claude knows how to prep a deposition on its own. It doesn't. It was handed a file of steps. Deposition prep just names one such file. Let's see what's actually inside it. Here Claude
Sounds like courtroom instinct
[0:10]Has a deposition prep skill and it sounds like real courtroom instinct, like it studied depositions and came back knowing how to corner a witness.
Broken, with a case — delete the folder, nothing is lost
[0:19]But nothing in the model changes. Delete the skills folder and Claude doesn't forget how to question a witness. There was no instinct to lose. It just stops following that one checklist.
The anchor: one file — deposition-prep's single SKILL.md
[0:29]Here's what a skill actually is, one file. Deposition prep for instance is a folder holding a single skill. MD steps for pulling a witness's documents from the e-discovery platform, organizing them around the case theory, and surfacing impeachment material written in plain language Claude reads before it starts. Claude reads that file
Read it, then follow it in order
[0:48]Top to bottom and works through it step by step in the order it's written. Pull documents, sort by case theory, flag impeachment material. No branching unless the file itself says branch.
Spec, not instinct — the payoff and the limit
[0:59]That makes a skill a specification, not courtroom judgment. The payoff, the same organized outline every witness. The limit, any question outside those written steps and Claude is off the map.
The anchor returns — same file, every run
[1:10]So deposition prep never taught Claude how to cross-examine anyone. It just guarantees that every time it runs, Claude reads that same file and produces the same organized outline. That's the whole trick.
Both directions — neither one is proof
[1:22]Watching Claude produce a sharp outline doesn't prove it understood the witness. A file can be followed to the letter on a case it never really grasped. And watching it produce a thin outline doesn't prove the skill is broken. It may just be a case the file's structure doesn't fit. A skill doesn't teach
Carry-out
[1:37]Claude how to depose a witness. It's a file of steps Claude reads before it starts. So every outline comes out organized the same way every time.
Your turn
[1:46]Your turn. Paste this into Claude. Pick a task you do the same way every time and outline a report, a checklist. Write me a skill. MD for it, plain language ordered steps, then read it back to me and walk me through exactly what you'll do before you do it. Claude deposition
Outro
[2:00]Prep, Liam in for Bear.
