Delight over this insight into hindsight and foresight

 

Yet another incisive comment by Aaron Bacal 1939-2015 (professionally known as Aaron Bacall).

As shown here a man of many talents.

I especially like that he was a chemistry teacher, since I was one too (in Victoria, Australia, during the 1960s, before I joined IBM in 1970).

Find out more about his work bt doing a web search like this.