Also, if you form an intentional concavity, say by using the lost-wax method[1] in preparation for casting a bronze sculpture, the hole has been planned and has

Also, if you form an intentional concavity, say by using the lost-wax method[1] in preparation for casting a bronze sculpture, the hole has been planned and has a purpose. That it did exist will be proved by the resulting sculpture although the hole will no longer exist (if it did). [1] https://en.wikipedia.org/wiki/Lost-wax_casting https://en.wikipedia.org/wiki/Lost-wax_casting