"Twitter is not a place to air diverse viewpoints; it is a desiccating swarm of like-mindedness, moving as a single mutating mass, shimmering with every minuscule ripple in the news cycle, destroying all perspective, undermining learning, destroying the very process of reading, and deeply corrosive of a liberal society. If you are in the middle of the online stream, as I was for a decade and a half, and you are intelligent and attempt to be conscientious and honest, the emotional toll will be crushing. If, like Freddie, you are already bipolar, it is a deeply unsafe space."