Dr Hannah Fry explored the brain numbing concept of infinity in her excellent recent series on BBC4, ‘Magic Numbers: Hannah Fry’s Mysterious World of Maths’. She showed that there may be more than one infinity and how to get a bed at the Infinity Hotel when you are told all the rooms are full (you ask the person in Room 1 to move to Room 2 and so on down the line, because you can always have infinity plus one). Walking across North Fen on Sunday it struck me that clouds help in thinking about the enormity of infinity: no two clouds since the Earth had an atmosphere have ever been the same and each one has been constantly changing shape, hence infinite variety. Well, infinite enough for me.
Photo: Great North Fen, Cottenham, Cambs, October 2018