Concept of Time

Time is a very interesting idea. The concept is time is completely man made, but we rely on it very heavily. Until I started thinking about the concept of time, I never really knew the reliance we have on time. Time is used everywhere. I failed to see that and I think we failed to notice the impact time has on us because we are so used to the concept. But time truly is used in so much around us that I am surprised I never really thought about it until now. There is probably a lot that I don't understand about it now, but I just wanted to share some ideas I have about time. First of all, time is used in science a lot. What comes to mind is physics; things like speed, velocity, acceleration, power, current, and even more. Without time, these things don't exist and are not measurable. Take speed- distance over time. Without time you only have distance and you can't calculate speed. Time is also used for us to know when to do things. We know when to wake up, go to school or work, eat, and go to sleep thanks to time. Time tells us when events occur and lets people find each other in these events. Without time no one would be able to tell another person when they want to do something. The whole idea of "when" is gone without the concept of time. Another thing time does is tell us how long something is. We know how long an hour is because we have time. An hour is just a measure of time. Time tells us the duration of events in our life. Without time, we wouldn't know the duration of things. I also thought about what life would be like if the concept time was never introduced. Imagine that. Things would be so different that it was hard for me to imagine a world without time, but I tried my best because it's pretty interesting. How would people be able to know when things were? Would that even matter? People wouldn't even know how to ask when things are, because you can't answer the question of when without time, as I said earlier. People also wouldn't be able to know how long things are, but again, would that even matter? Does time make us too aware of the duration of things in our lives? Do we actually care to much about saving time? Anyway, without time no one would be able to know the duration of things. In a world without time, many words that we use to describe time would be gone. When, how long, duration, after, before, later, earlier, yesterday, tomorrow, hour, second, minute, now, soon, moment, forever, and more words that I can't think of now, are inapplicable. We use these words a lot, but in a world without time most if not all can't be used. There's no real practical application to this, I just thought it was interesting to share.
-Smart