In a nutshell
@jasongorman
I don't really get it, but it sure does sound nice. What's the aha-moment here about the anti-proportional relationships between efficiency, effectiveness, needs and resources that I am missing?
@joe_vinegar
@yala @jasongorman @joe_vinegar An efficient system does not waste resources, at the possible expense of not meeting every need. An effective system meets every need, at the expense of some of the resources being idle sometimes (“wasted”).

@jonm @yala @jasongorman @joe_vinegar

It's called slack, and it's vital.

That's what people don't get.

@darwinwoodka Where would you put it, resource-utilisation wise? At 50 %, 60 %, with a hard limit at 80 %?

@jonm @jasongorman @joe_vinegar

@yala there's a little corner of operations research called "queueing theory", which demonstrates some mind-bendingly counter-intuitive relationships between service utilisation and system effectiveness.