> I'm willing to believe Googlers that it works well for Google It doesn't. In my entire career, that was the only environment in which some random would break

> I'm willing to believe Googlers that it works well for Google It doesn't. In my entire career, that was the only environment in which some random would break us and we couldn't do anything about it other than hope for a rollback and then wait for hours for the retest queue to clear before we could deploy anything at all. Maybe not all the time, but you need the escape hatch of pinning healthy deps, because HEAD of everything is not guaranteed to work.