Marketing is all about the color gray

Marketing is all about the color gray.  Nothing is pure white or pure black.  To the engineer it is black or white or a "1" or a "0".  Does the LED blink when it's supposed to?  Does the software do what it was intended to do?   Similarly, to the sales person life is black and white.  Did they make their quota?  Yes or No, 1 or 0, black or white.

No product or service will EVER be 100%.  It will never be perfect for the customer or consumer.  The goal of marketing is to take the "gray" and make it as white as possible in the mind of the customer.