Traditional education taught that human economic development progressed from hunting to stock farming and then to agriculture. However, the only real difference is that stock farming is an economic method of obtaining food by domesticating livestock, while agriculture involves domesticating plants. Therefore, this three-stage development theory is no longer accepted. Instead, the development of human civilization can be seen in the evolution of transportation. To understand the nature of how the world changes, we should observe the development of transportation. The increasing speed of movement is the main evidence that society is changing rapidly. - Joseph’s “just my thoughts”
The tallest mountain in the solar system is Olympus Mons on Mars, towering about three times higher than Mt. Everest. Its area, covering 295,000 ㎢, surpasses the size of the Korean Peninsula (220,850 ㎢) and is nearly equivalent to that of France or Arizona. While Olympus Mons has a greater height than any mountain on Earth, its vast area results in an average slope of only 5 degrees. As a result, hikers who ascend Olympus Mons often feel as if they are traversing a flat plain. For humans, the steepness of a climb matters more than its height. For example, ascending a steeper 5 m pole can be more challenging than gradually scaling a 500 m mountain. In life, choosing the right slope to climb is often more crucial than focusing solely on the height reached, whether going uphill or downhill. - Joseph’s “just my thoughts”