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A Subagent's Report Is Not a Handoff Until the Receiver Can Act
A subagent's report can arrive while everything it learned stays behind. Define handoff acceptance by what the receiver can check and do next, whether it is an orchestrator or a worker resuming a crashed eval run.9 min readhandoffsmulti-agent systemsA Contamination Cutoff Needs a Clock, Not Just a Date
A training cutoff of March 31 is a date without a clock. One post can land on either side of it depending on the time zone. How to pick one clock, size the ambiguous boundary day and keep it out of a held-out split.8 min readevaluationtimezonesCatch Duplicate Eval Results Before a Dictionary Hides Them
A retry appends a second result for the same case. Build a dictionary keyed by case ID and the pass rate now depends on row order; keep both rows and the error bar shrinks for no reason. Check the list first.8 min readevaluationdata integrityClean an Eval Set With a Coding Agent, Then Prove It Dropped Nothing
An eval set merged from three sources has mixed label spellings, near-duplicate prompts and empty references. A coding agent will tidy it. Three counts, computed by your own script, show whether it dropped a row that would fake a gain.8 min readevaluationdata-qualityThat is the first entry in the log.
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