[curiousyogurt]

According to Aristotle, we uncover theoretical knowledge by exploring that which has no practical (action-based) or productive (product-based) result; and what we possess is that which is known only for its own sake, for the sheer pleasure of knowing.

I've often thought a similar distinction can be made in engineering, where the product is created for its own sake, for the sheer pleasure of seeing it exist. This is one of those. An amazing piece of work. Bravo.