A well-known saying goes, "Nothing lasts forever." A lot of knowledge, although is widely accepted today, might be discarded tomorrow. This is not just an assumption since examples of discarded knowledge can be found ... the best explanation of the matter. In a certain time period, a scientific idea is generally accepted as no one can show its flaws and there are no better alternatives. As time goes by, technology keeps improving, giving people opportunities to do more reliable researches and further their understanding on many phenomena. This enables scientists to falsify the common theory ...

• Word Count: 1372
• Approx Pages: 5
• Grade Level: Undergraduate

... Marshall's method and way of analyses. In his book, Principles of Economics, he pointed out that the price and out of good are determined by both supply and demand. He goes on to describe how the curves of supply and demand are like a pair of scissors blades intersecting at one point to form the best conditions for the market, which is ... ...

• Word Count: 890
• Approx Pages: 4
• Grade Level: Undergraduate

... extent of the market. When the market is very small, no person can have any encouragement to dedicate himself entirely to one employment, ...." Taking the example of nail-making, he goes on, " Such a workman at the rate of a thousand nails a day, and three hundred working days in the year, will make three hundred thousand nails in the year. But in [a small ... ...

• Word Count: 2293
• Approx Pages: 9
• Grade Level: Undergraduate