In recent years, microdosing has gone mainstream as burnt-out parents and workers navigate stress and fatigue. In an inversion of the hippie dream, psychedelics are increasingly being used to stabilise a consumerist system in crisis. Yet personal testimony and scientific research suggest that these apparent stabilisers could instead be a source of transformation, unlocking greater energy, creativity, wellbeing and connection to our surroundings. The tidal wave of antidepressants has failed to heal us - could psychedelics fill the gap and more? Brilliantly marshalling original analysis and expert insights, High Definition explores practices and applications, the legislative and corporate picture, and the powerful emancipatory potential of these substances, probing how the psychedelic renaissance could be not merely a barometer of social change, but a catalyst for it.