The need for balance is a fair point. But then you should make decisions about what to measure on the basis of an explicit trade-off between “easier to get” and “more relevant”—effectively you are using an estimate for the quantity you are really interested in and so you need some support for the notion that your estimate is a reasonable one.
The need for balance is a fair point. But then you should make decisions about what to measure on the basis of an explicit trade-off between “easier to get” and “more relevant”—effectively you are using an estimate for the quantity you are really interested in and so you need some support for the notion that your estimate is a reasonable one.