Jack Schwartz (L), Dave Shields, c. 1975

Jack Schwartz (L), Dave Shields, c. 1975

Originally uploaded by daveshields

The only known photo of me with Jack Schwartz.

I was going to call this post “Soldering On with Jack,” but on closer inspection I see he is holding a wire-wrapping tool.

I’ve kept a copy in the top drawer of my desk for decades.

Jack *always* wore a sweater, just as R. P. Feynman always wore a long-sleeved white shirt.