FTL writes "Tim Robinson has built a computer capable of solving polynomial equations -- using Meccano. His difference engine (mirror) uses a similar approach to Babbage's design. He's also created a differential analyzer (mirror) complete with a GUI. Both could be scaled up indefinitely to handle larger problems. 'Computing by steam' is possible."
"Probably the best operating system in the world is the [operating system]
made for the PDP-11 by Bell Laboratories." - Ted Nelson, October 1977