I'd rather use "effectiveness" than "efficiency". Doing in in 20hrs what takes someone else 70hrs is efficient, but it may not be effective. There's no point ge

I'd rather use "effectiveness" than "efficiency". Doing in in 20hrs what takes someone else 70hrs is efficient, but it may not be effective. There's no point getting loads done if the work is low value. It's more important to focus on doing valuable work than getting lots done imo.