Plato was discoursing on his plan for site optimization and, pointing to the proposed layouts on the tablet screen before him, said while there are many interfaces in the world, there is only one 'idea' of an interface, and this interfaceness precedes the existence of all particular interfaces.

"I can see the interface on the screen," interrupted Diogenes, "but I can't see the 'interfaceness'".

"That's because you have the eyes to see the interface," said Plato, "but", tapping his head with his forefinger, "you don't have the intellect with which to comprehend 'interfaceness'."

Diogenes picked up the tablet, examined a layout and, after minutes of scrutiny, asked, "Is it simple?"

Plato nodded.

"Where is the 'simplicity' which precedes this simple interface?" asked Diogenes.

Plato allowed himself a few moments to collect his thoughts, but Diogenes reached over and, tapping Plato's head with his finger, said "I think you will find here is the 'simplicity'."