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I would say any of the suggested media presented for the time frame in a sealed conditioned container for a few decades would suffice.
Originally Posted by moromendas01
I would say any of the proposed media presented for the time frame in a sealed specified container for a few decades would suffice.
This was not a mistake on Moromendas01's part. If it was, he's had over two months to fix it. He very clearly did it on purpose, to: a) post his spam sig, and b) cover this tracks. To cover his tracks, he plagiarized a previous post in the thread. For the entire body of his own post.
After skimming the thread, it seems we are agreed that normal dvd/cd are the worst material - they degrade without even being used - as was confirmed by a french study - 10 years max, but normally, as most of us have experienced, considerbaly less.
Engraved material seems to be best - hey, you can still play the old phonographs and 78's. There is a huge variety of material available for engraving - clay has been mentioned and the most expensive, gold, is one of the metals most resistant to oxidation etc. - even though it is a somewhat soft metal.
The danger of putting all ones eggs in one basket has been pointed out - so copy, copy and distribute.
Engraved material means also, that unlike chemical (cd/dvd) and magnetic material, one could reproduce and transfer the information to low tech material. The chinese were the masters of this, as was Gutenberg - engraved stuff can be "printed", i.e transferred to short or longer term optical material for general use.
But CD's and DVD's were an irresponsible swindle and I really hope that nobody put their family photos on dvd's expecting them to last until their grand-cchildren grew up.
I have got rid of all my dvd's and am investing heavily in external disks. Magnetic material isn't perfect, I know I must copy them periodically. But I hope that someone will come up with a permanent form of storage in a Henry Ford format - i.e. affordable.
Interestingly, Certain old books(not mentioning what purpose these books were for in view of moderator's comments) came down to us nearly complete on vellum, which is a leather parchment. The ones I have in mind (Mentioning no names)have indeed stood the test of 1600+ years. Sadly, I don't think electronic media could manage that.
Vellum is pretty good. Its better than linen paper, which is much better than the pulp paper everyone uses now, and better than papyrus as well BTW, the only reason it lasts so long is local conditions. Still, its nowhere near as long lasting as clay tablets, and thats outclassed by stone. If you really want something to last for a long time, a very hard volcanic stone would be the way to go. Not that the other stone types are that bad either, plenty of 4000+ year old sedimentary stone structures (and engravings) are still around.
Electronics as we have them now wont even get close to stone.