Writing

Calibrated.

Calibrated is the Metriqx publication. Evidence-led, no hype.

calibration.substack.comCALIBRATEDCalibrated: independent evidence briefs.
Latest

Recent briefs.

  1. 4 August 2026

    The Kids Are Alright (But the Elderly Aren't in the Data)

    SensorFM has 5 million data points, but double selection bias means the people who need health AI and wearable technology most are being left out of the training loop.

  2. 27 July 2026

    Tested on 34-Year-Olds, Deployed on 74-Year-Olds?

    Why consumer wearable accuracy collapses exactly where clinical virtual wards need it most.

  3. 23 July 2026

    The Green Light Problem

    I’m Waiting for It": Skin Tone Bias and the Optical Gap

  4. 21 July 2026

    Repeating History on the Wrist

    We already know the cost of medicine validated on male-skewed priors. Digital health has the opportunity to fix the convention before it is retrofit to a hundred million users

  5. 15 July 2026

    Trained on Everyone, Validated on No One in Particular

    A trillion minutes of data, five million people, and one word doing a lot of work: "general."