A percentile is the wait that a stated share of people beat once everyone is lined up from fastest to slowest. It shows what an average hides: the few who wait the longest.
A short explainer video, under a minute. The manager, the robot and the customer are an illustration, and the numbers in it are round numbers for illustration.
At a glance
What a Percentile Is
The average hides those customers. So the video lines everyone up, fastest to slowest.
A Worked Example
The video's illustration uses round numbers. The average says two seconds.
Why It Matters
The video turns this into one question: who waits longest, and are we counting them?
Picture a manager who checks how long customers wait at the help desk. The average wait is two seconds, and she is pleased.
But a few customers wait twenty seconds, and they are the ones who leave.
What a Percentile Is
The average hides those customers. So the video lines everyone up, fastest to slowest.
The wait that most people beat has a name. It is called a percentile.
A Worked Example
The video’s illustration uses round numbers. The average says two seconds. The seventy fifth percentile says five. And the slowest few wait twenty.
The same crowd of customers gives three different answers, depending on which one you read.
The video’s illustration: an average of two seconds, a seventy fifth percentile of five and a slowest-few wait of twenty. They are invented round numbers, not measurements.
The Idea on One Board
Illustration: the wait, in seconds
Average 2
75th percentile 5
Slowest few 20
The honest limit
✓ A percentile hides what lies beyond it
✓ Pick the one that matches the pain
The Honest Limit
Even a percentile hides what lies beyond it. So the video’s advice is to pick the one that matches the pain.
Why It Matters
The video turns this into one question: who waits longest, and are we counting them?
Its takeaway is short. An average hides the slow ones, so look at the slow end.
The key insight: An average hides the slow ones. So look at the slow end.
One recent AI product claim is quoted at a percentile. Our report on Anthropic’s engineering post says Anthropic states that at the 75th percentile the time to a typeable page on a fresh load of claude.ai went from 3.1 seconds to 0.55, and that starting a new Claude Code session went from 0.8 seconds to 0.3. Those are Anthropic’s own results from a post dated 23 September, and our piece verified none of them independently.
The Business Engineer Lens
Where this idea sits in the Business Engineer library:
The Business Engineer framework maps where each part of the AI stack sits and who holds the leverage. These pills are short lessons from the same library.
Gennaro is the creator of FourWeekMBA, which reached about four million business people, comprising C-level executives, investors, analysts, product managers, and aspiring digital entrepreneurs in 2022 alone | He is also Director of Sales for a high-tech scaleup in the AI Industry | In 2012, Gennaro earned an International MBA with emphasis on Corporate Finance and Business Strategy.
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