The Elements of a Good Question

From The Inevitable: Understanding the 12 Technological Forces that will Shape our Future by Kevin Kelly:

A good question is not concerned with a correct answer

A good question cannot be answered immediately

A good question challenges existing answers

A good question is one you badly want answered once you hear it, but had no inkling you cared before it as asked

A good question creates new territory of thinking

A good question reframes its own answers

A good question is the seed of innovation in science, technology, art, politics and business

A good question is a probe, a what-if scenario

A good question shirts on the edge of what is known and not known, neither silly nor obvious

A good question cannot be predicted

A good question will be the sign of an educated mind

A good question if one that generates many other good questions

A good question may be the last job a machine will learn to do

A good question is what human are for