Ask 100 people for one word to describe Lean and the most common answer is efficiency. It's understandable — but it's a misdirection. While efficiency matters, it can pull your focus in entirely the wrong direction. What matters more is effectiveness — ensuring your efforts deliver exactly what your customer actually wants.
Efficiency Is Not Enough
If you are not delivering exactly what your customer needs, it does not matter how efficient you are. The diagram above makes this plain. The quadrant that kills businesses quickly is not low efficiency — it's low effectiveness. You can be deeply inefficient and still hold your own in the market, as long as you are focused on delivering precisely what your customers want.
We all know that customers have three core needs — Quality, Delivery, and Cost. But what if, by understanding your customers' experience of your business more deeply, you could go beyond meeting those needs and actively add to them?
The Clinic That Changed Everything — Without Changing Its Work
A group of doctors in a clinic were, reluctantly, convinced to improve flow. The change was simple: reduce the chairs outside their rooms from 40 to just 3, and bring patients in in groups of three rather than an entire morning's list at once.
After a month's trial, they were seeing exactly the same number of patients daily. But their patients — the customers — were in and out in a fraction of the time. The value-add work completed by the clinic's staff was identical. The customer experience was radically changed.
An unexpected bonus: the vast empty areas freed up by removing the chairs allowed the clinic to expand its pharmacy and create two additional rooms for a chiropractor and physiotherapist — growing the business without adding a single clinical hour.
Supplier B and the Order That Changed Everything
Your customer's view of your performance is simpler than you think: when did I get what I asked for? The following example illustrates how exceeding customer expectations, not just meeting them, is where real competitive advantage lives.
The two purchasing leads explained: "We sent a small order to three potential suppliers. All were told the cost, quality standards, and that delivery was required on day 6. All agreed they could deliver. All met cost and quality requirements — but the delivery outcome was very different."
"Supplier A delivered on time on day 6. Supplier C was a day late. Supplier B rang on day 3 to say they could deliver that evening — or hold it and deliver as promised on day 6. We took it immediately. It allowed us to deliver to our own customer early."
"Supplier B told us that sometimes, because of their improvements in flow, they can deliver early — and they always ask their customers which they prefer."
Mary asked for their recommendation. They were about to place an order several hundred times the size of the sample. "Supplier B, of course," they both said.
Start With CTQ — Critical to Quality
The expression "walk a mile in their shoes" usually refers to understanding behaviour. It applies just as powerfully to understanding experience. Start by understanding what your customer truly wants — not what you assume they want.
A useful measure here is CTQ — Critical to Quality. But it must be the customer's quality needs that drive it, not yours. Meet your customer's needs consistently, and you usually have a satisfied customer.
At a Supply Chain Conference, I asked a group of senior buyers from major UK retail chains to define their ideal supplier. After a moment's thought, they agreed: their ideal supplier is one they only hear from at contract renewal. Everything delivered on time, in full, at the right quality — throughout the entire contract. No drama. No chasing. No exceptions.
Look at your process from your customer's point of view. "Waiting" is one of Lean's seven wastes — and while you may not be experiencing it, your customer almost certainly is.