[api_or_ipa]

It's taught in even the most basic teaching curriculum. I learned about it as a teenager learning to teach swimming. To be honest, it's nothing new or special, and I mean, I don't know where you're coming at with the snarky comment about management, but humans are human and sometimes _how you say something_ matters as much as _what you say_. Nobody likes taking criticism, so it helps blunt the blow, while still allowing for critical feedback to be communicated and heard.