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Monday, May 24, 2021

Monday, May 17, 2021

Traffic Interchanges Compared

 How innovative designs for crossing streams of traffic can improve the flow. Different patterns for different volumes. 6 minutes. Fascinating. 

Wednesday, May 12, 2021

Thursday, May 6, 2021

Boat lifts

 We saw the marine railway in Ontario, which looks a bit like the Russian lift in this thread.

Tuesday, May 4, 2021

Sunday, May 2, 2021

Pedro Domingos

 

Invisible hand: things that are done for private benefit but turn out to be for the public good. Invisible foot: things that are done for the public good but turn out to be for private benefit.