Moving fast enough that you never measure the impact of your changes makes things regress — that is what happened to Anthropic, and they only acknowledged it later.

If you're going so fast, you're not measuring the impact of the changes that you're making, you don't have time to do that cuz you're just focused on shipping and then things regress and things get worse and we've seen that at Anthropic recently the last like month or maybe more than that where things have regressed.