The idea that fixes everything else is that suction does not pull. Removing air from a tube lets the surrounding atmospheric pressure push liquid up into it, and the atmosphere…
Source: Wikipedia
There is a problem in intelligence work that has no clean solution and recurs constantly.
Information obtained secretly is only useful if it is acted upon. Acting on it…
The starting point is that the front of your eye is a living surface with no blood supply, exposed to open air, that must stay optically perfect. Almost everything below…
Source: Wikipedia
There is a standard way of looking at old maps that produces a confident and entirely wrong conclusion.
The method is to compare the map against a modern one…
The whole subject rests on one arrangement: a stored precursor and an enzyme, kept in separate compartments inside the cell, which combine the moment anything damages the tissue. Here are…
There is a long-standing assumption in how intelligence gets discussed, and corvids are the clearest available argument against it.
The assumption is that sophisticated cognition requires a particular kind of…