I disagree that it is completely useless. You're basically arguing that time is only useful as a relative measure, not an absolute one. While that is true in

I disagree that it is completely useless. You're basically arguing that time is only useful as a relative measure, not an absolute one. While that is true in some sense (the ordering of events and the space between them is what matters), because history is so vast and interconnected and a total ordering is desirable, it just makes more practical sense to learn the absolute date of an event, not just the "relative" date