Author: administración

In 1843, Ada Lovelace looked at Charles Babbage’s unbuilt Analytical Engine and described something stranger than a calculator. If the relationships inside music could be expressed in symbols, she wrote, the engine “might compose elaborate and scientific pieces of music of any degree of complexity or extent.” That sentence is the shock in the record. Lovelace was not looking at a machine humming on a desk. She was looking at drawings, mechanical plans, punched-card logic, and a proposed engine of brass wheels and columns that Babbage never completed. Her published work appeared as a translation of an 1842 French paper…

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I get investments wrong all the time. Losing money is part of the game. But after I FIRE’d in 2012, the math changed. With no paycheck to bail me out, I could no longer afford big mistakes. This post will help you think about life after FIRE, and share why it’s critical to stay measured through all the hype, do your own due diligence, and stop blindly following highly paid financial pundits. The Joy Of Being A Wall Street Strategist One of the cushiest jobs you can land out of college is Wall Street strategist. I worked alongside them for…

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A common octopus (Octopus vulgaris) can solve a maze with one arm while another arm, on the far side of its body, is independently unscrewing the lid of a jar to get at a shrimp. The two limbs are not coordinated by a central command. They are, in a real sense, thinking separately. Each of those eight arms contains its own bundle of about 40 million neurons, and together they hold roughly two-thirds of the animal’s half-billion nerve cells — a nervous system so radically decentralised that biologists studying it have started calling the octopus the closest thing on Earth…

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In a lab tank at the Shirahama Aquarium on the Pacific coast of Japan, a jellyfish smaller than a pinky nail is doing something no other animal is known to do reliably. When the biologist Shin Kubota stresses it — by starving it, puncturing its bell, or shifting the water temperature — Turritopsis dohrnii shrinks, drops to the bottom of the tank, and over the next few days reorganises its adult cells into a juvenile polyp colony, the equivalent of a frog turning back into a tadpole, or a butterfly into a caterpillar. Kubota has watched individual specimens go through…

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Key PointsUnder Secretary of Education Nicholas Kent explains how the Working Families Tax Cuts Act simplifies the federal student aid system, cutting more than 40 repayment and discharge options down to two new plans starting July 1.Kent breaks down what SAVE borrowers must do now, the 90-day transition clock, and why the new Repayment Assistance Plan (RAP) is designed so on-time payments always lower your balance.Kent shares the new graduate and Parent PLUS borrowing limits and how some schools are already cutting program costs in response. The federal student loan system is heading into the largest set of changes to…

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The Aqueduct of Segovia rises out of the Plaza del Azoguejo in central Spain with granite arches stacked in two tiers, climbing nearly 28 metres above the street at its tallest point, and not a single one of those arches is held together by mortar. The Romans who cut the blocks sometime around the late first century AD — most archaeologists place it during the reign of Domitian or Trajan, between roughly 90 and 110 AD — relied entirely on gravity, friction, and the obsessive precision of their stonemasons. The aqueduct carried drinking water from a spring in the Sierra…

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