Funny, these terms are used in my field: https://en.wikipedia.org/wiki/Validity_(statistics) https://en.wikipedia.org/wiki/Validity_(statistics) and https://en.

Funny, these terms are used in my field: https://en.wikipedia.org/wiki/Validity_(statistics) https://en.wikipedia.org/wiki/Validity_(statistics) and https://en.wikipedia.org/wiki/Reliability_(psychometrics) https://en.wikipedia.org/wiki/Reliability_(psychometrics). Terms aside, this is a very good article. I've experienced the trade-off between reliability and validity in devising measurements myself, but had not realized it is unavoidable.