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nonrenormalizer's avatar

Sorry, but it slightly bothers me that the playground equipment doesn't appear to form a Mobius strip from the angle presented (trace the path of travel with your finger and it seems to only stay on one side of the climbing frame).

Don't think it makes much difference to the substance of the post, but going on a loop around a non-orientable manifold should (metaphorically at least) leave you feeling inside out and upside down!

Moses Sternstein's avatar

I don't think the construction story can be understood without breaking-out residential v. non-residential construction. Non-resi construction is booming. Resi-construction is not. I don't think the former has quite the concentration of non-citizens.

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