Quote:
Originally Posted by
Venice-H 
Digital, by definition, is a bunch of 0s and 1s, which are easy to store, copy, and translate. I'm not sure if DVD and Blu-Ray will be the reigning formats in 100 years (I very much doubt it), but the format used then is likely to still be digital. I don't know if film will even have a role then.
Film probably won't (though low-tech things have been written off before and survive still. Books, anyone?). As for digital being "easy to store, copy, and translate", it ain't necessarily so, to quote the Gershwins. Remember, whatever medium you put it on will stay locked away in a box underground for 100 years. It won't be transferred to something newer, like data on floppies being copied to CD.
Consider this from Cliff Stoll, who in 1979 helped record the data from the NASA Pioneer spacecraft's flyby of Saturn: "To make certain that we didn't lose any of this precious data, we saved it in four formats: 9-track magnetic tape, 7-track tape, paper tape, and punch cards. Fifteen years later, all those cards and tapes survive in a Tucson warehouse. They're in fine shape, but I can't read 'em. Punch-card and paper-tape readers just don't exist any more. Nor do those big reel-to-reel tape recorders." He was writing in 1994, and you see how high-end technology got obsolete real fast.
In short, it's not the data that's the problem; it's how you store it. Anyone assuming DVDs will be readable 100 years hence, good luck. You're assuming that you have a player (and as suggested above you could put one in the capsule). You're also assuming however:
(a) The player will power up in 2109 and hasn't gone bad from sitting unused for a century (and that 110-volt alternating current is still in use, probably a safe bet but who knows for sure?) -- if it doesn't power up or skips, who'll know how to fix it?;
(b) The DVD itself hasn't fallen victim to rot of some kind (even the manufacturers aren't claiming 100-year lifetimes, and while plastic may be almost forever, substrate layers staying stuck together and uncontaminated is not); and
(c) The screen has NTSC compatibility.
On that last, you could put a player with built-in screen into the box, but that still leaves you with (a) and (b).
Like I said, I don't envy anyone in the time capsule business!