It's odd that an economist wouldn't mention transaction costs in his model at all. If the cost of time travel is extremely high, it wouldn't be worth it to tra

It's odd that an economist wouldn't mention transaction costs in his model at all. If the cost of time travel is extremely high, it wouldn't be worth it to travel back in time for economic purposes. It's also possible that those with time travel ability choose not to alter the past for any of a number of reasons. Further, by the point at which time travel is developed, money may not have any importance. Yet another possibility is that our future may include a point of complete economic collapse in which all current banks cease to exist. There are plenty of good arguments against time travel, but Graboyes's isn't as successful as he would like it to be.