THIS THEORY OF TECHNOLOGY IS: TECHNOLOGY IS A SYSTEM OF EVOLVING SYMBOLIC MEMES WITHIN BRAINS.
This boils down to: MEMES MAKE TOOLS.
Memes in technology play a highly analogous role to genes in biology. Genes build organisms as their survival mechanisms; memes build technology as their survival mechanisms. As genes combine within genomes, memes combine into menomes. And as genes are only useful when multiply combined into genomes, memes are only useful when multiply combined within menomes.
Here is the essence of how this system works. The meme/large brain/technology system is a positive feedback loop. Technology created from technological memes in brains supplies more calories than genes alone can supply. In a positive feedback loop, increased calories gathered from using technology supports larger brains, and larger brains in turn allow more complex technological memes and thus create more complex technology. More complex technology gathers more calories to support a larger brain. This non-genetic feedback loop is the ONLY way to develop such an enlarged brain, otherwise other biological organisms that do not create technology would also develop large brains. However, without technology, organisms are limited to the calories which genes alone can provide. This simple idea explains so much so simply that it is important to understand it. It is the Fundamental Theory of Technology. It is also the Fundamental Theory of Human Beings. The two are intimately connected.