Two things are moving in opposite directions the whole time: heat going in, and water coming out as steam. Which one is winning at any moment determines what the food…
Source: Wikipedia
Skates and scooters were the first equipment most children operated independently, they were used on surfaces nobody had designed for them, and everything about them required adjustment. Here are…
The central fact is that honey contains far more dissolved sugar than water can normally hold, and very little water at all. Almost every peculiar thing about it follows from…
There is a category of behaviour that everybody recognises immediately and nobody can define precisely, which is usually a sign that something interesting is going on.
Play is obvious when…
Source: Wikipedia
There is an intuition about layered rock that is almost universal and substantially wrong.
The intuition is that layers accumulate steadily, like pages in a book, so that a…
There is a category of reform that looks obvious in retrospect and was truly difficult to arrive at, and postal payment is a clean example.
The arrangement that preceded it…