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	▲	octoberfranklin 5 hours ago
		The dark fiber glut wasn't caused by DWDM suddenly appearing out of nowhere. The telcos saw DWDM coming -- they funded a lot of the research that created it. The breakthrough that made DWDM possible was patented in 1991, long before the start of the dotcom mania: `https://patents.google.com/patent/US5159601` It was a straight up bubble -- the people digging those trenches really thought we'd need all that fiber even at dozens of wavelengths per strand. They believed it because people kept showing them hockey-stick charts.