Later is like a blackhole where you throw things you dont want to do. Later without context is never now. But time itself, idont think the concept of time existed until humans were around to think about it. Things just are and just were until a human decided to try and measure it and created a scale of time. The first clock was the sun but that only counts if the ground your standing on spins. If it didnt the concept of time might not have been created. Or we would go off the span of our aging bodies and think of it in a completely different way. I would think god just made the earth. Then we as man make stories about it in an attempt to understand what we cannot. What is the purpose of the idea of time? Iv figured out my own understanding of what time might be. I now choose to view it as a tool to measure and account for sequences of events in our span of life. But is their more of a motive for bringing its concept into creation? Do we have to believe in it? What if it didn't exist for you? We are the caterpillar and the butterfly. I think our metamorphosis is how we choose to conduct or selves through the trials of time.