I found a double-sided DVD so rare only collectors know about it

The other day, as I was perusing through my disc binder collection of Blu-rays and DVDs, I had an epiphany: if two is better than one, then, by extension, a dual-sided optical disc is surely better than a single-sided disc. After all, vinyl records and cassette tapes make use of double-sided storage technology, and so why not extend the concept to optical-based media as well?