Does time exist? The answer to this question may seem obvious -- Of course it does. Just look at a calendar or a clock. But developments in physics suggest that time may not exist and we should start to take that possibility seriously. But trying to get by in a world without time seems positively disastrous. Our lives are built around time. We plan for the future, in light of what we know about the past. For example, we hold people accountable for their past actions, with an eye to holding them to account later on, in the future. But what’s the point of acting to bring about a change in the future when, in a very real sense, there is no future to act for? Also, what’s the point of holding someone to account for a past action, when there was no past and so, apparently, no such action? It’s easy for philosophers and physicists to twist themselves into a pretzel when trying to think this through, but that doesn’t stop them from trying.