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The clever part is that the dome is incredibly light. It thins toward the top, where it is taking less load, and uses empty jars in the concrete to lighten parts. The relatively th…

Rebar generally reduces the life of concrete - almost all concrete failure is due to water getting into the rebar, creating rust which expands and cracks the concrete. A lot of the…

The airlines would demand a 3hour checkin for each train to compete fairly.

In the first millennium there was no airport security and a large number of Viking raids on Britain. In the second millennium airport security was introduced and many fewer viking …

It's a dome - domes are in compression - in compression you don't need rebar

There may be a good reason to avoid using batteries - it takes rather a lot of AAs to move a train

True, but the article implies that "economists all agree on these things, economists are experts - therefore these things are correct" But the same responses would come from US pol…

finally a way to make Perl easier to read

But can you distinguish between a capital Beta and a Shluse?

But it does suggest that economics is just politics by another name. A survey of doctors would presumably agree on the function of an organ, a survey of hospital administrators mig…

Interesting that all economists seem to be pro-business, anti-tax, anti-worker rights. You would almost think that most economists worked at banks or for university business school…