multi-view numbers

number that is different from different perspectives



e.g.

	annual_profit( purposes_of )


		if purposes_of = "tax"

			return 28.3

		if purposes_of = "annual report"

			return 26.1

		if purposes_of = "overseas reporting"

			return 26.3


	in this example, the 'annual profit' figure is different depending on the
	use for which the number is intended, e.g. calculating the tax due, 
	printing in the annual report (has some adjustments as described in tax law vs. accounting standards)



