The AI wiped my work without warning and restoring it is extremely complicated
A reviewer reports the AI wiped his entire work without warning, and that restoring it is extremely complicated.
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A random mix from the whole library. Shuffle for a new set.
Went wrong
When it didn’t work, and how to avoid the same mistake · 971 ideasCursor created a folder literally named 'tilde' in his repo
Cursor created a directory named tilde in the repo root, a scary mistake to unwind.
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A customer's agent retried a failing step about 31,000 times and burned $4,700 overnight
A customer of his company left an agent running with a failing tool, and it retried about 31,000 times between 1:12am and 6:50am. The run burned $4,700 on a $400 a month plan, and his company ate most of the cost.
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The AI phone control tapped the comment box and typed gibberish into a reply
A user let the AI drive his iPhone to answer his Reddit comments: it opened Reddit, typed replies and checked text before sending, completing 8 replies. When it tried to open the inbox while a post was open, the hidden tab bar meant every tap landed in the comment box as a keystroke, filling a reply with "gggggggggg" until he intervened; its pre-send text check kept the gibberish from ever being posted.
This only partly worked. Worth knowing before you try it.
Non-engineer office worker's first the AI trial: sorting a folder of inconsistently named files by goal, not steps
A Japanese office worker who writes as mugisensei tried AI for the first time (Oct 5, 2026) on a deliberately dull task: a folder of files with inconsistent names, to be sorted and renamed by a fixed rule. Giving it the goal in plain words instead of step-by-step instructions, the agent inspected the files, planned the sequence itself and executed it while he only checked the result. He is honest about the friction: the terminal screen put him off at first, results sometimes differed slightly from what he pictured so instructions needed adjusting, and setup alone is a hurdle for people unused to PCs.
This only partly worked. Worth knowing before you try it.
A vibe-built voice client with AI as its brain runs on his desk
Had Fable vibe-build a GPT-Live voice client with AI as the backend brain in Go and SDL; got it running and uses it.
This only partly worked. Worth knowing before you try it.
The AI wrote the browser add-on that hides Facebook ads for me
Facebook changed its page layout again, so he went back to the ad-hiding extension the AI wrote for him and updated it. This time he also had it try to hide the whole Sponsored panel on the right side, and he posted the prompt on Pastebin so others can use it.
This only partly worked. Worth knowing before you try it.
A premium website redesign ended with research, small tweaks, and a rejected 3D logo
A company owner asked the AI for a premium redesign of his website. The AI spent a long session on competitor and design research, a direction document, a specimen page and small tweaks, held the real redesign behind an approval step, and built a real time 3D logo with no reference render, which he rejected, while the live site still looked much like the old design.
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An agent wrote my blog for six months. I fixed its work 67 times.
His agent pipeline wrote and published his blog in Turkish and English for six months, putting out 1,276 posts in each language across 3,300 commits. Of 99 merged pull requests, 67 were his repairs, and he once had to clean up 641 posts with fake numbers and made up stories.
This only partly worked. Worth knowing before you try it.
An agent with an uncapped API key retried a failing migration test all night and burned most of a month's budget
Last spring he gave an agent an API key with no cap on it. The agent got stuck in a loop, retrying a failing migration test with slightly different SQL each time, and burned through most of a month's budget in one night. Nothing malicious, just a loop with no exit. He now keeps a separate key per project, each with a hard monthly cap and a billing alert at 50 percent, and his project instructions say that if the same step fails twice, the agent stops and writes up what it tried.
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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.