[parpfish]

i think that KPIs often make sense at an organization level of a business, such as "We want to boost revenue from this product line by X%".

but when you try to translate that to the individual level, it's almost impossible because it's hard/impossible to properly attribute value to individual actions.

[hdjjhhvvhga]

I think this is the key distinction. After two decades in the industry I can easily game any variable. Ant things change constantly. A person who seem unproductive today may surprise you tomorrow. You may consider yourself an excellent problem solver and then bump into something that is very difficult for you - but turns out easy for someone else. And so on and so forth.