its a version of https://en.wikipedia.org/wiki/Goodhart%27s_law https://en.wikipedia.org/wiki/Goodhart%27s_law the metric is of a good site or a poor site bein

its a version of https://en.wikipedia.org/wiki/Goodhart%27s_law https://en.wikipedia.org/wiki/Goodhart%27s_law the metric is of a good site or a poor site being a proxy for the quality of the service or product. As soon as this metric becomes common enough, it gets gamed, and thus fails as a good metric.