Four Ways a Test Can Lie to You
Ken W Alger
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Ken W Alger
Green and worthless: what verifying one small application taught me, when an AI agent wrote most of...
Green and worthless: what verifying one small application taught me, when an AI agent wrote most of the code.
The Sanity DEV Challenge wrapped up last week, and The Cellar won Path Two. The judges called the build writeup “a study in making verification hard to fake,” which is a generous reading of what was mostly me discovering that my verification was broken.
Excerpt from DEV Community ↗, by Ken W Alger.
Four Ways a Test Can Lie to You was first seen on DEV Community · Top this week on Oct 28, 2026. Since then it has appeared in 159 checks on 8 different days. Its best position was #14 of 30, reached on Nov 2, 17:43 UTC. It dropped off the list after Nov 4, 12:43 UTC.
Position on DEV Community · Top this week at every check (lower is better).
Best rank per day (UTC).
Platform metric as reported by DEV Community.
Archived daily, weekly and monthly lists that include this entry.
Not at the moment. It was last on the list on Nov 4, 12:43 UTC, after 8 days of trending.
#14 on DEV Community · Top this week, on Nov 2, 17:43 UTC. Trendoday checks this list every 60 minutes.
It was first seen on Oct 28, 2026 and has been on the list on 8 days (159 checks) since.