You can probably make a good guess though. If you have conversations at work like

bob: "hey come and check out this cool thing I made, I think it could save you a load of time"

me: "woah, nice one bob, that's amazing! Let's roll this out to the other devs"

then you're probably not working with someone like gp.

I would because they'd be more productive than me.

They might be more efficient, but by working 1/4 as much they're equally productive!

Exactly. You get paid for your output, not your effort.

Edit: A deleted reply said “You don't even really get paid for output. Output theatre pays better than output.” Great insight I thought worth persisting.

To be honest, I try my best to conceal my gains. I intentionally time my feedback to when it is expected of me.