(Laughter) And the reason for this — unless my car valet mysteriously is changing the oil and performing work which I'm not paying him for and I'm unaware of — is because perception is, in any case, leaky.
Y la razón es que, a menos que hayan cambiado el aceite en secreto, o hecho algo por lo que yo no pagué y de lo que no me he enterado, es porque nuestra percepción es imprecisa.