According to the legend, a ruler, who liked very much the new game of chess, wanted to reward an inventor of chess. So, he asked him about his wish. The inventor requested his king to give him one grain of rice on the first square of the chessboard, two grains on the second square, four on the third square and so on. The ruler was amazed at the modesty of the request – until it turned out that there was not so much rice in the whole kingdom! Why I’m telling you this old legend in the article about COVID-19 pandemic and gold? Well, the reason is that it shows the power of exponential growth. You see, the total number ... (full story)