There is a general expectation that pain corresponds to damage. A large injury should hurt more than a small one, and a deep wound more than a superficial one.
A…
Navigation problems divide into two parts, and confusing them is the reason this subject seems simpler than it is.
The first is knowing which way you are facing. A compass…
Most visible human variation is complicated. Height, skin tone, hair texture and facial structure each involve many genes contributing small effects, which is why they vary continuously rather than falling…
The useful frame is that you are not protecting the fruit. You are making conditions that the organisms which would spoil it cannot tolerate, and there are only about five…
The single most useful realisation is that you cannot turn coals down. Every control available is about moving the food or changing what is between it and the heat. Here…
The single fact behind most of this is that the sun is not a point of light. It is a disc, roughly half a degree across, and almost everything strange…