In economics there is Goodhart's law. 'Any observed statistical regularity will tend to collapse once pressure is placed upon it for control purposes.' https:

In economics there is Goodhart's law. 'Any observed statistical regularity will tend to collapse once pressure is placed upon it for control purposes.' https://en.wikipedia.org/wiki/Goodhart%27s_law https://en.wikipedia.org/wiki/Goodhart%27s_law