Professional negligence is somewhat related in the sense that it's generally recognizable in extremes, but is overall too abstract to define with much granularity. You can't measure it to tiny units.
I want to understand how something like this is codified. I did see this question (When is "reasonable" not implied in a contract?) in which "reasonable" is treated as a means of smoothing over the complexities of certain definitions.
If one wanted to codify something abstract -- like professionalism, kindness, humor -- how would that be approached? Can one simply put "reasonably" in front?
For example: say I had "kindness" baked into a friendship agreement:
I will be your friend and bring you snacks as long as you are reasonably kind. Signed me
... but they weren't kind and I wanted to cease bringing them snacks. Could I argue that they weren't reasonably kind? And how far can something like this be stretched before it's thrown out or ignored? Could one take it to such an extreme as
reasonably cool and still have a serious verdict?