Five years passed and Andrew couldn't feel them. The evidence was there, the trips, the birthdays, the places they'd lived, but the felt experience of five years had compressed into something closer to one. So he went looking for answers. He read the neuroscience. He ran experiments on himself. And what he found was surprising: you can't slow time down, but you can make it thicker. Thickening Time draws on research in neuroscience, psychology, and philosophy to explain why your years are disappearing and what you can do about it. Across 31 short chapters, it explores three levers — Body, Mind, and Architecture — that determine whether your time feels rich and textured or thin and forgettable. This isn't a productivity book. It won't help you get more done. It will help you feel the life you're already living.