Samuel DouglasChief Data Officer · Essays & perspective

Samuel Douglas / Chief Data Officer

Three arguments about what a pharmacy chain does with its data

Perspectives from a life in leadership.

The latest essay

Sensitive inference in loyalty data5 min read

A loyalty card should not know what is in the medicine cabinet

A pharmacy chain's front-store purchases can reveal pregnancies, dependencies and illnesses that no customer chose to disclose. I argue that some conclusions should be refused outright, whatever the consent form says, and that the board rather than management should own the list.

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The archive.

Sensitive inference in loyalty data

  1. Sensitive inference in loyalty data5 min read

    A loyalty card should not know what is in the medicine cabinet

    A pharmacy chain's front-store purchases can reveal pregnancies, dependencies and illnesses that no customer chose to disclose. I argue that some conclusions should be refused outright, whatever the consent form says, and that the board rather than management should own the list.

    Open essay

Price personalisation

  1. Price personalisation5 min read

    Personalised offers should only ever undercut the shelf

    Loyalty offers already give different customers different net prices. I argue that in a pharmacy chain personalisation should only ever lower a price below the posted one, should never be sized on signals of need or urgency, and should leave essential health products out altogether.

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Forecasting for health essentials

  1. Forecasting for health essentials5 min read

    Judge a pharmacy forecast by the worst week of winter

    Retail forecasting teams report average accuracy across thousands of products. For a pharmacy chain, the measure that matters is whether essential health products are on the shelf in the few weeks when everyone needs them at once, and boards should ask for that measure every autumn.

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