Comment Re:easy answer. (Score 2) 394
The same probably goes for any recording device made of expensive metals or gems. Stone tablets won't work well either, 99.9% of them haven't survived even 4 thousand years, let alone one million. Recording it somewhere likely to be preserved (the library of congress, wikipedia, maybe even facebook and twitter) might work as long as there's enough civilization to preserve those things. It would only take one luddite-religious revolution to destroy all semblance of knowledge and throw us back in the dark ages, so I wouldn't count on that either.
A time capsule isn't likely to work, even if it's a time capsule in space (it'll just get lost with all the other space trash). I wonder if we could put a transmitter on the moon and power it for long enough to just continuously send a signal back to earth... I suppose even the best nuclear reactor can't run for a million years. Maybe it could be solar powered? How long would such a device last on the moon, or in space?