There is a common assumption that a hot place is hot and a cold place is cold, and that a location is one or the other.
Deserts break that assumption…
There is a widely held picture of how concrete works, and almost every part of it is inverted.
The picture is that wet concrete is a thick paste which dries…
The shape of a letter is usually treated as a matter of convention, and to a large extent it is. But writing systems designed for a specific material carry that…
Source: Wikipedia
There is a habit of treating zero as obvious, on the reasoning that nothing is a perfectly ordinary thing to have none of.
The difficulty is not the concept…
There is a small set of sounds that produce a physical reaction in nearly everybody who hears them — a wince, a shudder, a reflex to cover the ears —…
The useful question at any reservoir is why the wall is where it is, because that position was chosen for reasons of geology and geometry that determined everything else. Here…