Sometimes it is useful to simply know something was brought up, but then someone had a sneezing fit and everyone lost track of the thread and the important edge case under discussion just fizzled.

A similar thing happens in agentic conversations, where a model may point out something but it is not recognized as important by the operator.

A few directives later and the model is being pushed another direction.

It can be very useful to have perfect recall of moments like these.