![]() It is about modeling real and idealized systems in ways that allow you to make precisely quantifiable predictions. I can tell you that mathematics is about the study of complex structures and about the interrelations of ideas. I am a professional mathematician who has conducted research in pure and applied mathematics at several universities, for almost 10 years. ![]() Many people think that mathematics is about performing complicated arithmetic, but this is nowhere near the truth. I mean, it is certainly more useful than juggling or riding a unicycle, but it will not help to advance society any more than speed-reading (another somewhat amazing trick which is useful, but will not lead to any major societal advancements). I agree that it is an amazing trick, but I believe there is very little it can offer society. Next time, I would like to pick up some of the findings on this method, which scatter in the Internet, in order to seek some suggestions. I really wonder if it can be a great contribution to human society to elucidate how an individual can develop this skill. This is my hypothetical argument about the trajectory from a soroban beginner to the Flash Anzan master, though it cannot be validated due to the lack of academic study on this method. Yuki Kurosawa, have completely internalized all the process including the finger motion in his mind. The kids in the first video, who are rapidly moving their fingers on the table, have reached to that proficiency level. Then how they become formidable math athletes?Īs they continue training, their calculating performance gets faster and faster, and over time they come to feel that the act of filliping beads is a bottleneck process and eventually replace the real soroban with an imaginary one in their mind. In the beginners' course, soroban learners calculate so slowly with some mistakes and complains as in the below video. Point is that this skill is not reserved for a handful of gifted people, but given to those who have grit and perseverance to go through training and practice. I suppose that considerably many soroban users can make it if the flashing speed is not very fast. However, it is probably wrong to think that the Flash Anzan players are extremely rare people, while not all the soroban users can perform it. How many people can perform this calculation method is not known. W ithout proficiency of soroban, i t is probably impossible to calculate as quickly as in the video. Its secret is that all of those in the video are practitioners of soroban (abacus), which is a Japanese traditional calculating device that has been widely used across the country for centuries. This amazing calculation method is called "Flash Anzan (暗算 = Mental Calculation) Method". This art, also known as flash anzan, is the explanation given for how, earlier this year, a nine-year-old Japanese girl, Rinne Tsujikubo, shocked viewers of the Chinese brain game TV show "Super Brain" by performing the final calculation-"6,172,938 x 1,203,490," getting "7429069153620," "and double-checked her work - before her competitors, or teammate, had seemingly even finished writing their answers." You can see her cool demeanor, and the shock of her competitors-who visibly start as they realize she has buzzed in the answer while they were still working on the problem-right here Tsujikubo performs the calculation, double checks it, and buzzes in in just 16 seconds : o.First of all, please watch the short video below, showing what is going on in a juku in Japan. ![]() A* Episode 27, Apparently, those who attain sufficient mastery over the abacus can do without an actual physical adding machine altogether, and perform lighting-fast calculations in their head by means of a purely mental abacus-visualizing, in their mind, an abacus performing the required calculations.Who needs telepathy when you got flash anzan
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