Measurement

Goodhart's Law: when measure replaces value

Matteo Miotto1 October 2026Year I • issue 5 September–October2 minutes read

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What is a company really measuring when it says it is measuring value? On 26 August 2026, Meta reached a $17 billion settlement. Among other things, the agreement provides for a daily two-hour limit on Facebook and Instagram for users aged 13 to 17 (adjustable only by parents), a default night-time block, a ban on displaying like counts to under-18s, and the option for minors to enable a feed without algorithmic recommendations.