2014年11月14日星期五

week[5]_rightAndWrongs

Like Yin and Yang, there always would be a matching opposite side of everything, such as sun and moon, hot and cold, man and woman, and definitely right and wrong. This indicates our topic this week, prove and disprove, how can we say that statement is wrong? Easy, prove its negation is correct. For instance a fake god defines all men shall below 2 meters height, then Yao Ming breaks his rule and proves it is a wrong definition.
It is absolutely an important proving technique but for sure it brings more complicity to our questions after all, for example we only need to find a way to prove a statement before but now we have to think it is right or wrong and decide to prove it or disprove it, which negates it the do the proving job.

In addition, I really enjoy writing proofs because it is so organized and my OCD is satisfied! Joke. I never consider myself as a science guy, but I still love writing the structure, the assume lines, the pick value lines, the proving parts whether in cases or not, and the introducing lines, everything is so neat and shows the charm of mathematic.

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