Where do ideas come from?
Where do ideas come from? What is the process of discovery? There are all sort of theories as to how ideas are born. There is the “thunderbolt moment” when in a flash, the concept is born. Then there is the notion of brewing — ideas aren't sprung into the world fully formed, they come about incrementally.
Techniques for coming up with ideas are equally diverse one is to try using analogies — relating two concepts that aren't at all related.
Meow is to cat as bark is to dog.
Land is to river as human is to vein.
Interestingly, Vitruvius, a Roman architect, was the first person in recorded history to use an analogy to drive a scientific theory. He did so by comparing ocean waves to the voice when describing how to build a theatre. By visualising sound as waves, it enabled him to design a theatre with good acoustics.