Language is useful, agriculture is yummy, and tools are neat, but as a species we never would have been able to construct and maintain healthy large cities, run complex societies, develop complex technologies, extract and refine natural resources at scale, or understand the inherent workings of the natural world without mathematics beyond basic arithmetic. Algebra and analytic geometry, calculus and differential equations, discrete mathematics, probability and statistics, model theory, et cetera are all crucial things that distinguish us from even the ‘advanced’ animals, allowing us to describe production, distribution, and transportation of perishable and durable goods in a repeatable manner, and to govern over large societies. The development of advanced mathematics paralleled and facilitated social, medical, and industrial development beyond the “tribal knowledge” stage, and despite the revulsion many people have for the subject as an academic pursuit, it underpins virtually everything you use and every interaction you have today. Of course, math has also allowed us to tunnel vision our way into implementing highly polluting and harmful technologies and then justify them in economic terms without consideration for the ‘externalities’. So, it is not only significant in making us successful but may be key in letting humanity dig its own grave. So it goes.
As for Cristoforo Colombo, he was an irredeemably terrible human being who brought slavery back to Europe even though nobody was really asking for it (Ferdinand repeatedly ordered him to stop bringing natives back to Spain), abandoned many of his men, disfigured and executed many of the Spanish colonists for minor disagreements, used his mangled interpretation of the Christian Bible (or what little he knew of it) to justify his actions, and was generally a terrible human being in every essential way. While he was the first southern European to discover the Americas, and more crucially, the one to show how readily it could be exploited for profit (mostly sugar and molasses; having never actually landed on the continental Americas, he barely brought back enough gold or silver to cover the financing). His biggest legacy, other than accidentally stumbling onto Hispaniola and then managing to navigate his way back, was in the genesis of what would become the Triangle Trade.
This is not only far from “…the most significant thing to happen in our human species”, it is essentially all of the worst of human impulses somehow jammed into one contemptible figure who by dint of good posthumous PR mostly by American Puritans became a celebrated figure of a grand and largely fabricated mythology. The (re-)discovery of the Americas was essentially inevitable (as was the apocalyptic plague that happened due to wide contact between Europeans and the American Natives), and the plunder of riches and resources a natural consequence of human conquest, but its significance is overstated by people who proclaimed that Pax Americana was “The End of History”, as I’m sure the Qing, Macedonians, Mongols, Romans, et cetera believed as well.
Stranger