Clever business owners figure out how to sell to their existing customer base by ensuring they have high value adjacent products or services.

FORBES: The Hands-Down Best Place to Advertise Your Business

Since most image-processing operations, such as sharpening up a fuzzy document, or altering the colours in a photograph, involve looking at the value of a particular pixel and then altering it depending on the value of adjacent pixels, this is a real advantage.

ECONOMIST: Analogue computing