Commensurability

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Generally, two quantities are commensurable if both can be measured in the same units. For example, a distance measured in miles and a quantity of water measured in gallons are incommensurable (thus stressing the point that they cannot rationally be compared). A time measured in weeks and a time measured in minutes are commensurable because a week is a constant number of minutes (10080), so that one can convert between the two units by multiplying or dividing by 10080.

• commensurability (philosophy of science), the commensurability of scientific theories
• commensurability (ethics), the commensurability of values
• commensurability (mathematics), the concept of commensurability in mathematics
• commensurability (astronomy), the concept of commensurability in astronomy
• commensurability (law), the concept of commensurability in law

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