Hello everyone!Plug a car in and the current it draws was negotiated before any power moved. Almost all of that negotiation happens on one thin signal wire using a square wave and three resistors. Today I want to go through the actual numbers in that handshake, because once you know them, a charger that stubbornly delivers 7 A stops being a mystery. 1. One Wire That Carries No PowerBoth the Type..

Hello everyone!There are plenty of ways to have a great season at the plate, but only one way to win a Triple Crown: finish the year leading your entire league in batting average, home runs and runs batted in, all three at once. It sounds like the sort of thing a superstar should manage every few years. In practice it has happened fifteen times since 1901, and exactly once in the last fifty-nine..

Hello everyone!Offside is the only law in football that asks an official to judge two things at the same instant: where a player is, and exactly when the ball left a team-mate's foot. Human eyes cannot do both at once, which is why this one law has been rewritten more often than any other, and why it now has more technology pointed at it than the rest of the rulebook combined.The numbers behind ..

Hello everyone!Nothing in golf course maintenance gets talked about more than green speed, and almost none of that conversation uses numbers. Players say a green is quick or slow, and committees ask the superintendent to make it quicker. There is, however, a device that settles the argument, a half century of readings taken with it, and a recent study that attaches a cost in minutes to every ext..

Hello everyone!Most of the attention in investing goes to the return number. The tax code, though, cares about two things that have nothing to do with how good the investment was: how long you held it, and when you chose to realize the gain. Those two choices can move the final balance by tens of thousands of dollars on the same portfolio and the same return.Today I want to lay out the actual 20..

Hello everyone!A recall notice in the mail is easy to file under "I will deal with it later." The trouble is that about half of the vehicles recalled in a given year never make it to a service bay in the first twelve months, and a meaningful share never make it at all. The United States set a record in 2025 for the sheer number of recall campaigns issued, so the odds that one of those envelopes ..

Hello everyone!Every DC fast charger in the world does the same job: push direct current straight into a battery pack while the car and the charger negotiate how much. The disagreement was never about the electricity. It was about the plug. Four standards grew up in four places, each with its own pin layout, its own voltage ceiling and its own idea of how much current a handle should carry. In N..