From Peter Payne
I liked Marcus Chown’s analogy of a pair of gloves to explain chirality (15 May, p 28) but you don’t need the mirror he suggests using to turn a left-hand glove into a right-hand one: just turn it inside out.
It might not help to solve his “fiendishly complex” calculations, but it has a practical advantage. If you are right-handed, the right-hand rubber glove you use for washing up wears out much more frequently than the left. By turning your surplus left-hand gloves inside out you can restore the balance.
Bondleigh, Devon, UK
