Welcome to the fractured future, at the dusk of the twenty-first century.
Earth has a population of roughly a billion hominids. For the most part, they are happy with their lot, living in a preserve at the bottom of a gravity well. Those who are unhappy have emigrated, joining one or another of the swarming densethinker clades that fog the inner solar system with a dust of molecular machinery so thick that it obscures the sun.
The splintery metaconsciousness of the solar-system has largely sworn off its pre-post-human cousins dirtside, but its minds sometimes wander.and when that happens, it casually spams Earth's networks with plans for cataclysmically disruptive technologies that emulsify whole industries, cultures, and spiritual systems. A sane species would ignore these get-evolved-quick schemes, but there's always someone who'll take a bite from the forbidden apple.
So until the overminds bore of stirring Earth's anthill, there's Tech Jury Service: random humans, selected arbitrarily, charged with assessing dozens of new inventions and ruling on whether to let them loose. Young Huw, a technophobic, misanthropic Welshman, has been selected for the latest jury, a task he does his best to perform despite an itchy technovirus, the apathy of the proletariat, and a couple of truly awful moments on bathroom floors.