The single fact that organises the subject is that magnetism is produced by moving electric charge, and every electron is both moving and carrying an intrinsic property that behaves like…
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…
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…
There is an assumption embedded in ordinary language about growing old, and it is worth examining because it turns out to be misleading.
The assumption is that ageing is what…