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Entry: Fads, Tradition, and Real Knowledge Link: http://www.takimag.com/blogs/article/fads_tradition_and_real_knowledge#24612 Post contents: Numbers matter and you use math to understand numbers because numbers are part of math. Example. Suppose US population stabilizes at 300 million and immigration is 2 million per year. Suppose people live 75 years so 4 million die per year. Then there must be 2 million births. 2 million births over 4 million deaths is 1/2. So the genetic survival ratio per generation is 1/2. In 4 generations you have 1/16 of the starting genes. To avoid this, immigration has to be zero. You have to use math to understand numbers. You can't use your emotions to substitute for numbers. Your emotions don't tell you your choices, it tells you what to do after the math tells you your choices. Stop all immigration. That means close to zero, like less than 25,000 per year. Sent at: 2008 08 08