Pause and look, and you will see that you are surrounded by glass: light reflects off and refracts through your windows; it encircles a glowing filament above you; it’s in a mirror hanging on the wall; it lies shattered in a dented corner of an iPhone; you’re drinking water out of a pint glass. Taking up a most common object, rarely considered because assumed to be transparent, John Garrison draws evocative connections between historical depictions of glass and emergent discourses within the technology sector that envision glass as holding unique promise for new forms of interaction. Grounded in examples familiar to most readers, this book offers a series of surprising—often counterintuitive—insights into how we see the world and see ourselves in the world.