> the update introduced an additional reward signal based on user feedback—thumbs-up and thumbs-down data from ChatGPT. This signal is often useful; a thumbs-do

> the update introduced an additional reward signal based on user feedback—thumbs-up and thumbs-down data from ChatGPT. This signal is often useful; a thumbs-down usually means something went wrong. > We also made communication errors. Because we expected this to be a fairly subtle update, we didn't proactively announce it. that doesn't sound like a "subtle" update to me. also, why is "subtle" the metric here? i'm not even sure what it means in this context.