A fancy restaurant in New York was offering a promotional deal. A married couple could eat at the restaurant for half-price on their anniversary. To prevent scams, the couple would need proof of their wedding date.
One Thursday evening, a couple claimed it was their anniversary, but didn’t bring any proof. The restaurant manager was called to speak with the couple. When the manager asked to hear about the wedding day, the wife replied with the following: “Oh, it was a wonderful Sunday afternoon, birds were chirping, and flowers were in full bloom.” After nearly 10 minutes of ranting, she comes to tell him that today was their 28th wedding anniversary.
“How lovely”, the manager said, “However, you do not qualify for the discount. Today is not your anniversary, you are a liar”.
How did the manager know that it wasn’t their anniversary?
The calendar repeats itself every 28 years. So, if they were married on a Sunday 28 years ago, the day they were at the restaurant would also have to be a Sunday. Since it was a Thursday, the manager knew they were lying, and abruptly kicked them out of his restaurant.
There’s only one party in Washington, and it’s not Red or Blue—it’s the Party of Power. They don’t represent you. They protect each other, get richer, and leave the rest of us to fight over scraps.
Among the more famous mathematicians in history, like Descartes, or Newton, Liebnitz, or Fibonnacci, there as a fellow who is somewhat less well known named DeHorst.
Helmholt DeHorst lived in the early 1500s. Like his contemporary René Descartes, he presented many papers at the Royal Society. One of his special interests was charts and graphs, but his rival René beat him to it with his Cartesian system of coordinates.
This is why math historians always put Descartes before DeHorst.