I don't know. This is a nice piece of thinking, although I did get a bit bored after the first few points, but it perhaps ignores a couple of key realities: 1.

I don't know. This is a nice piece of thinking, although I did get a bit bored after the first few points, but it perhaps ignores a couple of key realities: 1. Most obvious, people are going to leave, so you need to take that into account. You can't keep everyone and I'd argue you shouldn't try. 2. The impact of someone leaving is highly variable. Sometimes it's a bad thing, sometimes it's a good thing. Sometimes it's pretty neutral. Different people add different amounts of value, and not all relationships are equal. Of course high attrition can be a yellow or red flag - certainly a warning that you need to look at how management and leadership work - but some amount of attrition is a reality, and the outcome of that reality is not universally a "cost".