Related to https://en.wikipedia.org/wiki/Dimensional_analysis in physical sciences. One of the first questions to ask when comparisons or equivalence (I tend to avoid “identity” as a term—“equivalence” is more flexible and brings less baggage) are asserted is “what are the units for that?”
The example of height is a good one—the units can be length or percentile of a given distribution, and once you recognize those units, the ambiguity is removed.
Related to https://en.wikipedia.org/wiki/Dimensional_analysis in physical sciences. One of the first questions to ask when comparisons or equivalence (I tend to avoid “identity” as a term—“equivalence” is more flexible and brings less baggage) are asserted is “what are the units for that?”
The example of height is a good one—the units can be length or percentile of a given distribution, and once you recognize those units, the ambiguity is removed.