At the time I (and my dad) were buying CD-R and DVD-R for storing/backing up home media, we still had dial-up internet. "Research" was precious time on the phone line and while I am one to indulge in an excursion down the presumably gratuitous information rabbit hole on many topics, the archival-ness of burned discs never occurred to me. It must have been a discussion on it here on HN, many years after the last time I used disc drive for burning, that I realized it was something worth thinking about.