Descartes walks into a restaurant.
A waiter comes over and hands him a menu.
Descartes makes his choice of entree and the waiter asks
“Would you care for an appetizer while you’re waiting?”
Descartes replies “Oh, I think not”.
And then he vanishes.
As my old friend Sid W Sodnagel once said:
“Cogito, ergo, .... PFFFFT!”