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How to waste time trying to solve a problem that even a child can prove you it can't be done... At least now I want to continue writing on this blog.... I have messed up in the past trying to solve the wrong problem, solve the problem in a wrong way, or trying to solve a problem that can't be solved. So this time I simplify the problem and made sure that there is a answer. But again I failed after 1 week because..... This is what happened...... We were trying to see whether forming a circular link in a sensor network can reduce the overall energy consumption. I did the calculation for a simplified case & figured out it can be done, if two nodes that wants to talk to each other is within a certain angle. Then I tried to solve the big problem by integrating over the whole sensor region. However I got stuck. I then went and talk to my supervisor and discussed about the problem. He said "we don't know whether nodes will follow the shorter or longer path along the circ