What Tibet Taught Me About Supply Chain Metrics

In Tibet, distances were traditionally measured not in miles or kilometres, but in cups of tea.

A journey between two villages was not “17 kilometres.” It was “three cups of tea” , meaning the number of tea stops a traveller would need along the way. The measurement accounted for altitude, weather, terrain, and the simple human need to rest and connect.

It was imprecise. And it was perfectly useful.

The Problem With Precision

Supply chain leaders love precise metrics. Inventory turns of 6.3. On-time delivery at 97.2 percent. Cost per unit down to the decimal. We build dashboards with five-digit precision and celebrate when the needle moves by a fraction of a percent.

But precision is not the same as understanding. A procurement manager can tell you their supplier count is 347. Ask them if that is too many, and they pause. The number is exact. The meaning is blurry.

The Tibetan tea cup measurement worked because it answered the question that actually mattered: “How hard is this journey going to be?” Not “How many metres?”

Five Supply Chain Tea Cups

What if we measured supply chain complexity the same way? Here are five proxy metrics that tell you more about the real experience than a KPI dashboard ever could.

1. The Email Thread Count

Some suppliers require one email per order. Some require a 14-message thread with three CC’d managers, two follow-ups, and one “per my previous email.” The first supplier is one cup of tea. The second is a full pot. Measure how many emails it takes to move a standard order through your system. That number tells you more about process friction than any cycle time metric.

2. The Fire Drill Frequency

How many times this month did someone say “we need this by end of day”? Fire drills are not accidents. They are a symptom of a system working at the edge of its capacity. Track them like any other metric. Two per week is manageable. Two per day means your planning horizon has collapsed to a few hours.

3. The Spreadsheet Dependency Ratio

Walk through your supply chain operation and count how many decisions still rely on a spreadsheet that one person maintains. Every spreadsheet is a cup of tea , a manual checkpoint where process breaks down. A procurement team with 12 critical spreadsheets is running a 12-cup journey. Every single day.

4. The Phone Call Count

A simple cross-border shipment used to take one phone call. Now, with customs delays, carrier changes, and documentation errors, the same shipment takes five calls. The phone count tracks friction in your logistics network the way tea cups tracked altitude in Tibet. Each additional call represents a failure somewhere upstream that someone is compensating for in real time.

5. The Meeting-to-Decision Ratio

How many meetings did it take to make the last sourcing decision? Three meetings with action items that moved the needle? That is one cup. Six meetings where the same slide deck was presented to different stakeholders? That is a three-cup journey with a headache. Track this ratio and you will quickly identify where governance is adding friction instead of clarity.

The Power of Imprecise Metrics

None of these metrics are precise. An email thread count does not replace your OTIF percentage. A fire drill frequency does not replace your inventory turnover ratio.

But they answer a different question. They tell you what the journey feels like for the people making it.

The Tibetan tea cup measurement was not a substitute for knowing the distance. It was a way of understanding the experience. Supply chain leaders who only watch the precise metrics are like a traveller who knows the exact distance to the next village but has no idea whether the trail is steep, the weather is turning, or the next tea house is still open.

Start Measuring What Matters

Here is a simple exercise. This week, ask your team three questions:

One: What is the one metric that, if it improved, would make your day measurably better?

Two: What is the one metric that, when it gets worse, you are the first to notice?

Three: If you had to measure the difficulty of your job in cups of tea, how many cups are you drinking today?

The answers will tell you more about the health of your supply chain than any dashboard refresh.

The Tibetans understood something that modern supply chain leaders often forget. The best measurement is not the most precise one. It is the one that helps you actually complete the journey.