In a movie featuring a man drifting on an uninhabited island, a scene where the date is marked by scraping a rock appears. How many days was it today? What time is it now? We always ask questions that we always wonder about time. Humans are relieved by knowing the date.

Knowing the time was, in fact, a basic condition for human survival. From the moment when we found the location of the animal carcass by seeing the condor spinning around our head to the fragile early humans, who had gone through a tearful adaptation process in the changing environment, from the moment the hyenas took a piece of meat and ran away The time to hit was a moment of desperate despair that separates life and death. Mankind, who had survived by eating all kinds of snowballs, made stone tools, lit fires, and hunted, gradually increasing the size of their brains, learned that when the moon was full and tilted several times, bison would come. In accordance with the day, I had to trim the stone sill and dig a deep trap. I had to know when I could hunt freely. When is that time? To know then, I had to record the time. The first watch was probably a sundial that could tell the time without special tools. The earth itself, where we lived on our feet, was a clock, but it would have given us the approximate time, not the hours and minutes. Nowadays, the time when the quartz crystal vibrates 32,768 times is 1 second, and the time when the cesium atom vibrates 9,192.631770 quantum is 1 second, so it is a great science era.

Today, when relics such as calendars appeared, it is known as the Late Paleolithic Age, which is usually around 30,000 years. Artifacts with strange points on a piece of bone the size of the palm of the hand appear during this period, and some scholars argue that these points are a calendar indicating the movement of the moon. Although it is not easy to argue, it seems that the cave paintings of this period also have drawings that accurately describe the characteristics of the buffalo during the molting period, so it is certain that the people of the Late Paleolithic period were clearly paying attention to the change of seasons and times.

Time has always been as important to us as life itself. And that time always passes. It doesn't go back. Since millions of years ago when humans started walking on two feet, time has always flowed forward. For us, time is both tangible and intangible. Sometimes there is a study of time going fast and sometimes slow. It must have been concluded that the time to go slow and go fast was the time of mind. This is because tangible time always passes the same to everyone.

Augustine said, 'The past, present, and future do not exist in themselves. They are all present in our mind. The past exists in our memories now, and the future exists in our expectations and prospects.' It's a wonderful saying that tangible time just passes, but intangible time is always the present. We hope that the happy present will continue in the new year of 2019.

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