Insights · The Last Mile of AI · 01
Your AI agent is 90% right at every step. So why does it finish only 2 out of 3 tasks?
Chihoon Shin (CEO, MSSJ · Ph.D. in Computer Science) · September 23, 2026 · 1 min read
Your AI agent can be 90% right at every step and still finish only 2 out of 3 tasks.
We saw this in our own small AI engine: 90.7% right screen by screen, but only 8 of 12 tasks finished.
Then we asked two separate reviewers to argue against us. They made good points: mistakes are linked, step tests show where things break, and checking everything costs time.
So we changed the question. Not "steps or tasks?" but "where can a mistake still be undone?"
Every job has a few points of no return: submit, pay, delete, send. Check there. Test steps on real screens before that. And give the agent a way back.
Where are the points of no return in your work?
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