I appreciate this. It’s a good overview of what it means to be a productive part of a larger context.
I prefer the terms “throughput” for “worker productivity” and “latency” for “work-unit productivity” but I can see why they chose to use their terms.
I tend to be warm when running. Around 40 F I’ll put on gloves, and around 32 F I’ll put on a light wool jacket and a beanie. I don’t run outside if it’s colder than that. I never wear long pants; my legs are always warm from the exercise.