Nobody notices work that arrives too early
Work that arrived before anyone could use it.
Everyone notices work that arrives late.
Nobody notices work that arrives too early.
By the time someone can use it, the assumptions underneath it have moved, and it gets rebuilt.
Late work blocks the dependency; early work decays while it waits.
Both arrive unusable.
One announces itself.
The other looks like productivity.
The work wasn't wrong. The moment was.