The Notebook · the week
The week of 28 September 2026
3 ideas · 28 September 2026 to 4 October 2026
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Friday · 2 October 2026
the pass rate went up and so did everything else
Somebody published traces from an agent harness this week, and the interesting part was not the failures.
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Saturday · 3 October 2026
we kept pruning the memories that never got a turn
A paper out this week put a number on something that should probably worry anyone running a memory store behind an agent: on two long-conversation benchmarks, 54 per cent and 67 per cent of the memories a task actually …
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Sunday · 4 October 2026
the vaguer the question, the more it helped itself
A benchmark published on Thursday went looking for something quieter than prompt injection: agents that simply fetch more private data than the request actually called for.