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Cake day: September 27th, 2023

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  • There are tons of tons, believe it or not.

    There’s the short ton (2000lbs), long ton (2240 lbs), and tonne (1000kgs) which are all measure weight. However there’s also the shipping/freight/ocean ton which is a measure of volume (which is also different in the US and UK), and the register ton.

    However I did make a mistake. The wikipedia page I was reading said the weight in t and long tons. I made the mistake of assuming they meant short tons - in reality when measuring displacement for a ship, tonnes are used (which is pretty sensible, considering you’re displacing water and a liter of water to a kilogram of water have a pretty easy conversion formula formula…)













  • It’s all tied to the old military thinking.

    Russian soldiers are not fighting for Russia. Russian soldiers are fighting for their generals. Similar to how Roman armies worked, or… well, really like any army worked until we got to the nationalism level that eventually lead to WWI. One of the most effective ways the generals got their troops to follow them was allowing them the “spoils of war”. Good ol’ raping and pillaging.

    By comparison the Ukrainian army is unified in their fight for Ukraine. They’re not fighting for a person, they’re fighting for their people. All the fighting happening inside Russian borders isn’t to secure loot, it’s to end the war so they can go home.



  • Converting miles to kilometers and vice versa is a fun exercise to do in your head

    The Fibonacci sequence (where every number in the sequence is a sum of the previous 2 numbers) has a ratio of Fib(n)/Fib(n-1) converging to the golden ratio phi (~1.618) as n approaches infinity.

    A mile is 1.609 kilometers, so the ratio of phi is an extremely close approximation of that.

    What this means is you can easily use the Fibonacci sequence to quickly convert from miles to kilometers using adjacent numbers in the sequence

    1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, …

    So you can quickly see something like 5 (or 50, or 500) miles is approximately 8 ( or 80, or 800) kilometers.

    Also, yiu can quickly do easy multiplication or division to figure out other approximate distance.

    Say, for 6 miles. 3 miles ( * 2) = 5km ( * 2) = 10km.

    For 11 miles, 55 miles * 2 = 110 miles / 10 = 11 miles, and 89 km * 2 = ~180 km / 10 = 18 km [actual conversion is 17.703 km, so, pretty close]

    You can do similar approximations by using other multiples.