Fictions are useful so long as they are taken as fictions. They are then
simply ways of "figuring" the world which we agree to follow so that
we can act in cooperation, as we agree about inches and hours, numbers
and words, mathematical systems and languages. If we have no
agreement about measures of time and space, I would have no way of
making a date with you at the corner of Forty-second Street and Fifth
Avenue at 3 P.M. on Sunday, April 4.

Autore: Alan W. Watts