The internet isn’t what we were promised. In its infancy, Google’s stated ambition was to “organise the world’s information and make it universally accessible and useful”; today, you’ll have to wade ...

Libor Šmejkal has a fondness for the artwork of M. C. Escher, whose work was often inspired by mathematics. One of Šmejkal’s favourite pieces is Horseman, a striking picture that features an elaborate ...