Oscar Wilde famously said: "To lose one parent may be regarded as a misfortune; to lose both looks like carelessness."
I wonder if the same applies to career mentors.
On the 5th June, I went to two memorial events, one at Stanford for Solomon Feferman, who died last year and another one for Danny Bobrow who was my mentor and collaborator at Xerox PARC for almost nine years. Danny died on 20th March 2017. It hurts. It does get you down.
Also missing Grisha Mints!