Efficiency asks whether you did it well. Effectiveness asks whether it was worth doing.
Efficiency asks whether you are doing the thing well. It never asks whether the thing was worth doing, or how little of it you actually needed.
There is a quiet religion in the operating world, and its god is efficiency. Do more. Do it faster. Do it cheaper. Strip out the waste, tighten the cycle, lift the throughput. Operators are trained on it, measured on it and promoted on it, and very few of them ever stop to ask whether it is the right thing to be worshipping.
I do not think it is. Efficiency is a useful servant and a terrible master, and a great deal of operational effort goes into being magnificently efficient at things that should not be happening at all.
It is easy to see why efficiency wins. It is measurable. It moves. You can put it on a dashboard and watch it improve, and improvement you can watch feels like progress you can trust.
It also flatters everyone. The team that does twice as much in the same time looks impressive. The operator who shaved a fortnight off the cycle has a number to point at. Efficiency produces visible, quantified, defensible wins, and in a world that runs on quarterly evidence, visible and quantified beats important almost every time.
So operators chase it. More output, less input, faster, cheaper, repeat. And the chase feels like the job being done well.
Here is the flaw at the centre of the religion. Efficiency takes the activity as given. It assumes the thing is worth doing and asks only whether you are doing it well.
It cannot tell you the activity is pointless. It cannot tell you that the report nobody reads is now produced in half the time, and that this is not a win, it is a faster way to waste an afternoon. It cannot tell you that the process you have lovingly optimised should not exist. Efficiency measures the how and is structurally blind to the whether.
So you can improve every efficiency number you own and leave the business exactly where it was, or worse. The metrics climb, the dashboard glows, and the company is now extremely good at doing things that were never worth doing. You optimised the engine without once checking the direction of travel.
The metric that actually matters is effectiveness, and it asks two things efficiency never will.
The first is simple. Is this producing the outcome. Not “are we doing it well,” but “does doing it move the thing we actually care about.” A lot of busy, well-run activity fails that question instantly, and once it fails, its efficiency is irrelevant. Speed is no virtue in the wrong direction.
The second question is the one I care about most, and it is the idea of the minimum effective dose. Borrow it from medicine. The minimum effective dose is the smallest amount of a thing that produces the result you need. Anything beyond that is not extra benefit. It is just cost, and risk, and noise.
Most activity in most businesses is wildly over-dosed. Far more meetings, more reporting, more steps, more touchpoints than the outcome actually requires. The effective operator does not ask “how do we do more of this, faster.” They ask “what is the smallest version of this that still gets the real result,” and then they do exactly that and not one unit more.
This is why the religion is hard to leave. Effectiveness and efficiency reward opposite behaviours.
The person who says “let us stop doing this entirely ” or “we are doing ten times more of this than we need” has just proposed a reduction. On every efficiency dashboard, that looks like less. It looks like lower output, a quieter team, a smaller number. It looks, frankly, like someone doing less work.
Meanwhile the person who takes the same pointless activity and doubles its speed looks like a star. So the culture optimises waste instead of cutting it, because cutting it shows up as a smaller number and optimising it shows up as a bigger one. The incentives are pointed directly away from the right answer.
The fix is an order of operations. Effectiveness first. Efficiency second, and only on the survivors.
Before you optimise anything, put it on trial. Ask whether it should exist at all. Ask what outcome it is supposed to produce and whether it actually produces it. Ask what the minimum effective dose is, the smallest version that still works, and whether you are currently running at five or ten times that dose.
Kill what fails. Shrink what is over-dosed. Only then, on the things that are genuinely worth doing at the dose that genuinely works, reach for efficiency and make them lean. The biggest gains in almost any business are not in speeding things up. They are in stopping things, and in doing far less of the things that survive.
None of this means efficiency is bad. A well-run, lean operation is a real achievement, and waste inside a worthwhile activity is worth removing. It means efficiency is a tool and was never supposed to be the goal, and operators have spent years polishing the tool and forgetting the goal.
Your value as an operator is not that you can make things faster. Software and process can make things faster. Your value is the judgement that decides what deserves to happen at all, and at what dose, before anyone reaches for the stopwatch.
That judgement is a discipline, and it is a different one from operational efficiency. It takes the willingness to propose reductions that make your own dashboards look smaller, and the clarity to defend the minimum effective dose against a culture that always wants more. The best operators build that discipline deliberately, or they bring in someone who will ask whether the thing should exist before anyone makes it efficient.
Do that, and your effort lands on things that actually matter, at the dose that actually works. Skip it, and you will keep being brilliantly, measurably, award-winningly efficient at things you should have stopped years ago.
Efficiency asks if you are doing it well. Effectiveness asks if it was worth doing, and how little of it you needed. Only one of those questions can save you.
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