Economist Thomas Woods likes to challenge his students with a simple thought experiment: What kind of economy would we have if all machines and tools disappeared? Cars, tractors, iron smelters, shovels, wheelbarrows, saws, hammers, spears, everything. What if they all went <em>poof</em> and all that we consumed had to be hunted, gathered, grown, and made, WITH OUR BARE HANDS?
Without question, life would be rough. Imagine how hard it would be to eat if we had to bring down game with our teeth, fists, and fingernails. Large game would be out of the question. Rabbits would be within our power to subdue... but you would have to catch them first. What if vegetables had to be planted and picked by hand, and what if we didn't even have sacks in which to carry the harvest? Imagine if we had to make clothes and furniture without factories... without even scissors or nails?
Despite our intelligence, we would be no better off, economically at least, than chimps and orangutans.
Tools change everything and create the possibility of an economy. Spears help us bring down game, shovels help us plant crops, and nets help us catch fist. These devices magnify the efficacy of our labor. The more we can make, the more we can consume, and the more prosperous our lives become.
— Peter Schiff; How an Economy Grows and Why It Crashes