Herbert Simon

What information consumes is rather obvious: it consumes the attention of its recipients. Hence a wealth of information creates a poverty of attention, and a need to allocate that attention efficiently among the overabundance of information sources that might consume it.

Every time you log in to Facebook, every time you click on your News Feed, every time you Like a photo, every time you send anything via Messenger, you add another data point to the galaxy they already have regarding you and your behavior.

It is a myth that art has to be sold. It is not like stocking a grocery store where people fill a pushcart. Art is a product that has no apparent need. The salesperson builds the need in the mind of the buyer.