> An abacus is not counting. A mechanical computer isn't adding. An electronic computer isn't really computing, because there is no objective phenomenon known a

> An abacus is not counting. A mechanical computer isn't adding. An electronic computer isn't really computing, because there is no objective phenomenon known as computation, except as a mental operation. We call something a computer for only one reason: it can be interpreted in a computational manner. Nothing in this statement distinguishes computation from any other category of thought. The same case can and has been made for trees. These are empty words.