<Table> <Tr> <Td> Theoretical definition </Td> <Td> Operational definition </Td> </Tr> <Tr> <Td> Weight: a measurement of gravitational force acting on an object </Td> <Td> a result of measurement of an object on a newton spring scale </Td> </Tr> </Table> <Tr> <Td> Theoretical definition </Td> <Td> Operational definition </Td> </Tr> <Tr> <Td> Weight: a measurement of gravitational force acting on an object </Td> <Td> a result of measurement of an object on a newton spring scale </Td> </Tr>

Why has so much time been devoted to the concept of operational definition