inversion SKILL.md skillA
inversion from martineserios/thebrana is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add martineserios/thebrana/inversion@git:20260615.6d899e8Pins git:20260615.6d899e8 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- martineserios/thebrana
- Path
system/skills/acquired/inversion/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260615.6d899e8, committed Jun 15, 2026
- Size
- 3,654 bytes
- Repository stars
- 3
- License
- MIT
Backward-from-failure thinking — define what would guarantee failure, then systematically avoid it.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Inversion
**Invert the problem. Design failure actively. Then avoid everything you designed.**
Carl Jacobi: "Invert, always invert." Charlie Munger applied this to business and investing. Instead of asking "how do I succeed?", ask "how do I guarantee failure?" — then don't do that.
---
## When to use
- When you're stuck on how to achieve something
- When forward planning feels abstract or unconvincing
- As a sanity check on any plan ("what would make this fail?")
- Before a high-stakes decision
- Pairs well with `/brana:pre-mortem` (pre-mortem imagines failure; inversion actively designs it)
---
## Step 1 — State the goal
What are you trying to achieve?
```
AskUserQuestion: "What outcome do you want? One sentence."
```
---
## Step 2 — Invert the goal
Flip it completely:
- Goal: "Build a product users love"
- Inverted: "Build a product users despise and never use"
- Goal: "Ship on time"
- Inverted: "Guarantee we miss every deadline"
State the inverted goal explicitly. The more specific the inversion, the more useful the next step.
---
## Step 3 — Design failure actively
Generate everything that would guarantee the inverted goal succeeds. Use these prompts:
…Read the whole file at its exact version.
How to install
mdr add martineserios/thebrana/inversion@sha256:03b0a224756b6d59The line at the top of this page pins the label git:20260615.6d899e8, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_4eo2twfdiv3dfb54)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jun 15, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3654 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
martineserios/thebrana · 3 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4eo2twfdiv3dfb54 GET https://markdownregistry.com/api/v1/resolve?ref=martineserios/thebrana/inversion GET https://markdownregistry.com/api/v1/blob/03b0a224756b6d593513fe864d9fecf5ee4f2f12957282e6debe64273fd728eb
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from martineserios/thebrana
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