It has been a while since I updated this blog – attributable to laziness and procrastination. The catalyst for starting again was a thought-provoking email I received from my older brother, George, who is 70 years and was recently diagnosed with “vocal nodules” – also called “singer’s nodules” or “screamer’s nodules”. George is not much of a “screamer” and his singing is, for the most part, limited to a bawdy song about Cleopatra. It is more likely the result of excessive talking having taken its toll as he makes presentations to audiences around the world on the subject of multi-cultural mathematics. Apparently the remedy for this particular ailment is to…