The syntax elements are similar but the semantics are very different. The idea was that each pizza had a name that was totally unconfusable. This was not as easy as it sounds. Another pizzeria trick was the garlic. Customers could choose pizzas with or without garlic sauce.
Visible information is faster to access and process.
The solution to the garlic problem was to put visible bits of garlic on those pizzas treated with the invisible garlic sauce. In fact, when it comes to cooking, feedback plays a vital role in all its forms. Audio, turning the gas up or down purely on the basis of the whistling noise that the gas jets are making. All this feedback is somehow natural. In contrast the world of software and products uses feedback that is artificially added to the system in order to help the user, the beep signals, the red LEDs and so on.