> On Jul 22, 2018, at 8:46 PM, Warner Losh via cctalk <cctalk@classiccmp.org> > wrote: > > Somewhat of a tangent, but this just popped up for me. > > https://www.theatlantic.com/technology/archive/2018/07/microfilm-lasts-half-a-millennium/565643/ > > and I thought of this thread. Apologies if it's a duplicate.. > > Warner Interesting. The article seems to say that it isn't the images on the film that last 500 years, only the substrate. The images would last too, if done by silver nitrate (original black & white technology). Later dye based stuff, like the blue you see on DEC microfiche, not so clear. Probably not; I wouldn't trust organic dyes to last a century. I suppose that this stuff would be discussed on the Long Now Foundation website. paul
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