
Folding Ideas
HN treats it as the definitive, compassionate documentary on why people fall into conspiracy theories.
Mechanical & precision engineering
Excelsior10000 · Discussed on HN from 2014 to 2025
A 1953 US Navy training film explaining the basic mechanisms in mechanical fire control computers aboard ships. It shows how gears, differentials and cams solved mathematical problems in permanent mechanical form.
Read the notesExplains mechanisms of fire control computers; beautiful and elegant.
“It's beautiful in its elegance! I have watched it on multiple occasions just for the sheer beauty of the mechanisms involved.”Read the original HN comment
coreyp_1 · 2017-05 · 13 recommenders across 12 months

Folding Ideas
HN treats it as the definitive, compassionate documentary on why people fall into conspiracy theories.

US Auto Industry
Held up as a marvel of pedagogy and the best explanation of differentials, recommended again and again.

gimpymoo
HN recommends it often as an entertaining and authentic dramatization of Sinclair versus Acorn, the story from which ARM grew.