Mod parent up. I don't know whether profiling works or not, but that final comment was certainly tacked on without justification.
Q. What are the odds that 50 yrs of technological progress would slash the stellar travel time, so that a 100-yr trip would likely be pointless?
1) Does copyright apply to random generation? The Shakespeare issue captures the essential point... Would the monkeys hold copyright on their text, having produced it by chance?
2) Is intentionality is required for moral rights of art creation? If I'm camping and a rock falls on my camera and somehow causes a photo to be taken, does the rock have the copyright? What if a monkey falls on the camera, with the same effect? What if the monkey tries to eat the camera, with the same effect? What consciousness of the act of creation is required? In this case, the monkeys framed their reflections in the lens, which was a creative act if using a mirror is a creative act. There can't have been any consciousness of others publishing these images; are the 'portraits' thus portraits to us but not to them?
3) Copyright is a human social construct that prevents the exploitation of creativity to the detriment of authors. Does this have any meaning in whatever system of exchange impresses monkeys?
If this is correct, then it's almost ideal. Not legally watertight, but, certainly sufficient to proceed with.
I realise that I was assuming that copyright resided with the Wikipedia Foundation because the only alternative seemed untenable -- that the required attributions for every stage of revision could become exceedingly complex. But there actually is no single copyright statement on a Wikipedia page now that I look for one.
It seems, following this up, that the Wikimedia Foundation Terms of Use fills the gap I was worried about: any contributor agrees to be attributed simply by a link to the end product... (which will itself link to the version history and contributors).
Therefore, for any text you hold the copyright to, by submitting it, you agree to license it under the Creative Commons Attribution-ShareAlike 3.0 Unported License.
...
As an author, you agree to be attributed in any of the following fashions: a) through a hyperlink (where possible) or URL to the article or articles you contributed to, b) through a hyperlink (where possible) or URL to an alternative, stable online copy which is freely accessible, which conforms with the license, and which provides credit to the authors in a manner equivalent to the credit given on this website, or c) through a list of all authors. (Any list of authors may be filtered to exclude very small or irrelevant contributions.)
+1 Anonymous. If this was StackOverflow, I'd select your answer.
If all else fails, lower your standards.