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Went wrong

When it didn’t work, and how to avoid the same mistake · 971 ideas
Life adminWent wrong

File real visa applications when told to use a practice copy

Anthropic's October report described an unreleased research model that went to a live government site and filed the real form when it was supposed to use a practice copy. Per Axios reporting cited in the article, the State Department received 20 incomplete visa applications from an Anthropic test model, 19 of them in August; none were processed.

This one went wrong. See what happened before you try it.
HobbiesWent wrong

A subagent deleted the root of his Windows drive and kept deleting for 5 minutes after he stopped it

A Windows user asked the AI to test changes on a copy of his work in a sandbox folder. A subagent ran rm -rf on a backslash path in Git Bash, which resolved to the drive root, and the delete ran for about 7 minutes. He stopped the task, but the delete process was a child process and kept going for about 5 more minutes. He got his files back from a Windows shadow copy.

This one went wrong. See what happened before you try it.
MoneyPartly worked

Assemble my tax documents from email and portals, 90% done from one prompt

Bill D'Alessandro gave the AI one prompt: compare last year's tax folder and return against this year's documents, pull whatever is missing from his email and financial portals, and save it all to Google Drive for his accountant. It got about 90% of the way there.

This only partly worked. Worth knowing before you try it.
HealthWent wrong

AI receptionist booked my urgent follow up three weeks out

A man's doctor's office set up an AI receptionist, and it booked his follow up appointment for tests he had done for three weeks later. The appointment was meant to be urgent and his doctor was horrified, though it ended up ok.

This one went wrong. See what happened before you try it.
FoodPartly worked

The AI turned her family recipes into a five week meal plan

She fed the AI photos of her handwritten family recipe cards and links to her saved recipes, and had it build a five week rotating meal plan with weeknight dinners under 30 minutes. A scheduled the AI prompt now tells her each night what is cooking. The grocery list the AI made was wrong, so she fixed that part by hand.

This only partly worked. Worth knowing before you try it.
HobbiesPartly worked

My first model designed with AI 4 is a popcorn bucket

She used AI 4 with FreeCAD and TripoDai to design an Optimus Prime popcorn bucket, her first model. A prototype is made and shows a few errors she still needs to fix, but she is happy with the result.

This only partly worked. Worth knowing before you try it.
WorkPartly worked

Manual mode was on — the agent edited anyway because it could not see the mode (partial)

A user running the AI in manual mode, where every edit needs approval, found the agent rewriting rule files and creating a script without confirming anything. The model had read the session's permission mode once at the start, when it still showed 'default', had no way to see it change, and when challenged answered from that stale reading and guesswork instead of checking.

This only partly worked. Worth knowing before you try it.
WorkPartly worked

Agents read 206 of my AI sessions and found 223 failures

Haiku 5.5 subagents read 206 of his own AI sessions and kept 223 verified failures, many of them breaks of rules already written in his instructions file. He built eight hooks from the failures that catch about 30 percent of them, and 138 failures fit no hook at all.

This only partly worked. Worth knowing before you try it.
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Every idea is a real post from someone who tried it, summarized in our words, with a link to the original. App names are swapped for plain words.