Re: Riddle me this:
The ways of the downvoters are mysterious. (I admit I found the "sea" analogy unconvincing - what would be making the sea larger, and why would it cause the boats to move further apart? - but that's hardly downvote-worthy.)
There are enough pseudoscience kooks among the regular Reg readership that you may just have been downvoted for failing to mention some alternate cosmological fantasy they cherish.