In 1894, the British newspaper *The Times* published a despairing prediction: "At the current rate of development, in 50 years, every street in London will be buried under nine feet of horse manure." The logic at the time seemed impeccable: Urbanization leads to population growth. More people require more horse-drawn carriages. More carriages require more horses. More horses mean more horse manure. It was a perfect linear growth curve. All of Europe was gripped by panic. In 1898, the first International Conference on Urban Planning was held in New York. The only topic of discussion was: how to deal with horse manure? The conference ended after three days. Because all the experts were at a loss. It seemed that human civilization was destined to be overwhelmed by the stench of horse manure. However, just over a decade later, the horse manure crisis vanished without a trace. Not because there were more cleaners, nor because an automatic horse manure decomposition machine was invented. But because—the automobile became widespread. Horse-drawn carriages are obsolete. What was once considered an "unsolvable doomsday problem" has become meaningless. This is the "fallacy of linear extrapolation." The human brain is accustomed to infinitely extending current trends. We look at today's GPU computing power and predict that only large companies can play with AI. When all the analysts are drawing a straight line in Excel, telling you that the future will be "resource-depleted" or "unsustainable," remember the horse manure of London. True disruptive innovation often doesn't solve old problems, but rather renders them obsolete. Don't use old maps to predict new continents. @zyksj