Compatibility across media
While 1000 years is ridiculous, the idea of storing on media designed to last beyond 50 years makes total sense. BluRay and M-Disc are compatible in the same drives for both read and write. The biggest difference is M-Disc is about half a generation behind standard BluRay discs from a size and cost perspective.
Beyond 50 years is not out of the question though. In the same BluRay drive that supports M-Disc and 100GB+ BDXL discs, you can still insert and play your very first commercially produced CD. http://abbaoncd.wordpress.com/european-cds/european-cds-1982/
Biting the hand that feeds IT
