About Productivity, Efficacy and Efficiency

Nick stated productivity as “having a shippable product”, and efficacy as generating something “useful”1, which I interpret differently.

I think Nick combine the definitions of productivity and effectiveness as a whole to illustrate his idea, but I’d like to keep them separate. Here’s the definitions for those three words:

  • Efficiency: How many things can be done in a period, which are not necessarily influential?
  • Effectiveness: How influential a work can be (in the future)?
  • Productivity: How effective in a period?

Productivity has compound meanings which measure the number of jobs can be done and the influence to the future. I also prioritise efficacy over efficiency a lot in productivity since the works are meaningless if they don’t shift the future in a better way.


  1. [[Your Knowledge Base as a Wiki — Hack / Make]] ↩︎