Rocket science has been mythologized all out of proportion to its true difficulty.

Sharing the code just seems like The Right Thing to Do. It costs us rather little, but it benefits a lot of people in sometimes very significant ways. There are many university research projects, proof of concept publisher demos, and new platform test beds that have leveraged the code. Free software that people value adds wealth to the world.

It is not that uncommon for the cost of an abstraction to outweigh the benefit it delivers. Kill one today!

Making one brilliant decision and a whole bunch of mediocre ones isn't as good as making a whole bunch of generally smart decisions throughout the whole process.

Because of the nature of Moore's law, anything that an extremely clever graphics programmer can do at one point can be replicated by a merely competent programmer some number of years later.

The speed of light sucks.

Sometimes, the elegant implementation is just a function. Not a method. Not a class. Not a framework. Just a function.