There is an old puzzle about a ship whose planks are replaced one at a time until none of the original timber remains, and the question of whether it is…
There is a misunderstanding built into how these plants are usually described, and correcting it makes everything else about them clearer.
They are not predators in the sense of animals…
There is a category of historical evidence that is systematically misleading in a way nobody notices, and early photographs are the clearest case.
A photograph feels like direct evidence. It…
There is a reported experience so widespread that it barely gets questioned, and the questioning is where it becomes interesting.
The experience is that time accelerates. A childhood summer was…
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…