From Brian Horton
Arranging the dishes in a dishwasher in a circle is more effective than in a square (19/26 December 2015, p 62). But most dishwashers have a rectangular shape. The manufacturers have obviously not tried dipping sheep to eradicate lice. It is well known to those who have that round dips are far more effective than square dips, which cannot adequately wet the sheep that stand near the corners. Washing machines are round inside despite being square outside, so why not dishwashers?
West Launceston, Tasmania, Australia
