> We find that models are not failing due to “death by a thousand cuts” (i.e., many small errors). Instead, they main- tain near-perfect reconstruction in some rounds, and experience critical failures in a few rounds, typically losing 10-30+ points in a single round trip

> We find that weaker models’ degradation originates primarily from content deletion, while frontier models’ degradation is attributable to corruption of content.

I think we largely already knew this. This is why we fudge around with harnesses and temperature etc.