Nice couple of rabbit holes, TM51! The DC3 article was dear to my heart as my uncle worked for them in Long Beach for a Long time...35-40 years and I've been on one flight in one at an air show and in many of them at air shows...does kind of make you well up. I remember the smell...a real olfactory experience I got back when I read the article.

Yup, we've come a long way since pencil and velum and made leaps and bounds with every step. If you want a mind rattling rabbit hole take a look at software for designing ASIC chips and what they are capable of doing with them. And yet every idea starts in the head and sometimes built on the fly and last just as long, or Longer (think pyramids or Parthenon).

The show is Ok for a lunch time recess to me but they don't say much, only light a candle once in a while.

PJ