A Tiny Crevice. In other words, it is also called an affordance, permissiveness, or tolerance. A 5mm hole and a 5mm rod don’t fit perfectly together. If you hit it with a hammer, the rod might go into the hole, but only by forcing it. If they are the same size, they don’t really fit. There needs to be a slight gap to ensure a proper fit, which is known as ‘engineering tolerance.’ In this world, 5mm exists only as a concept and doesn’t truly confirm its existence. For some, ‘tolerance’ might be seen as a mistake or imperfection, but for others, it’s a principle of life that drives the world and should be natural. - Joseph’s “just my thoughts”
Here a product is being made by only three countries, South Korea, China, and Japan. It's not a semiconductor but a nail clipper. You might think that a nail clipper is not a big deal, but it's not as simple as that. Nail clippers are a combination of all sorts of advanced technologies. In the 1980s, South Korea could produce submarines and battleships, but they did not possess the technology to produce nail clippers. When the upper and lower teeth are in mesh, the chink must be 0.1 to 0.2 millimeters. When perfect engagement, the nail is not cut properly on the contrary, the outrange of this tolerance, is cut out coarsely. Today, thanks to technological advances, South Korea has been able to narrow this chink to between 0.05 and 0.08 millimeters. South Korea, to achieve this goal, produces a special steel called "15CM" through POSCO which is specially made for this nail clipper. Many different advanced technologies are combined in this tiny nail clipper. Don't ...