A crystallographer (not my tutor) Image from Wikipedia I was giving a talk at Bristol University last Wednesday about randomness and probability, based on my book Dice World . Following it, I got an email asking if I was really suggesting that everything that happens to us is just random, even, for instance, meeting someone and falling in love? My response was that there is a mix of chance and choice. Chance is behind a meeting, but each party in such an occurrence then makes a series of decisions - choices - that influence the outcome. (You can argue whether those decisions are themselves pre-determined or if there really is free will, but I that's getting too philosophical for me.) I gave my questioner the example that I would not have met, fallen in love with and married my wife if my tutor at university had not been a crystallographer. When I started my Natural Sciences course at Cambridge I was expected to take four subjects. Three were pretty obvious - maths, physi...