We have an innate impulse to be obedient to higher authority. Technology has replaced religion to a large degree and has become the target for our relatively unquestioning obedience. This is the place to question that obedience.
Blackhole City category:
Over half the world lives in cities now - 70% by 2050.
Cities are reactors/crucibles/test tubes that are responsible for most of what we know as civilization. Most progress at least defined as “ever better explanation” takes place in the big cities. Its much easier for the city to shake us up than us to shake the cities. It pays to know what is shaking you up or down.