In the grand narrative of human history, there is a pervasive myth that events unfold according to a meticulously crafted plan, orchestrated by rational actors with clear intentions. Yet, when we peer closer, we discover a world shaped more by chaos and the unpredictable whims of individuals often deemed unstable by contemporary standards. Take, for instance, Peter the Hermit, whose fervent, impassioned preaching in the late 11th century mobilized thousands for the First Crusade. Here was a m...