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I agree, the PDF about the elevators was fascinating. I've submitted it separately here: https://news.ycombinator.com/item?id=17926777 https://news.ycombinator
by owenversteeg 8y ago
I agree, the PDF about the elevators was fascinating. I've submitted it separately here:
https://news.ycombinator.com/item?id=17926777 https://news.ycombinator.com/item?id=17926777