It does appear that some parts of our evolutionary process seem inevitable. It is striking that throughout evolutionary history, the eye evolved independently fifty to a hundred times. This is strong evidence for the fact that the different rolls of the dice that have occurred across different species seem to have produced species with eyes regardless of what is going on around them. Lots of other examples illustrate how some features, if they are advantageous, seem to rise to the top of the evolutionary swamp. This is illustrated every time you see the same feature appearing more than once in different parts of the animal kingdom. Dolphins and bats, for example, use echolocation, but they evolved this trait independently at very different points on the evolutionary tree.
LanguageCrickets chirp,Birds sing, Dogs howl,It's their own thing.Cats purr,Mice squeak,Cows moo,It's not what you think.Whales whistle,Dolphins click,Snakes hiss,So listen to this.Sheep baa,Rabbits twitch,If you can't speak,It's only a glitch.A body speaks,Their hands do wave,They're all speaking together,Now don't be so naïve.It's all a language,Which we don't hear,b\Because it's not our own,What do we care!
A pair of dolphins swept by us in the water, flicking their heads out to get a look at us as they went. One of them made a chittering sound that wasn't very melodic. The other twitched its tail and splashed a little water our way, all in good fun. They weren't the attractive Flipper kind of dolphins. They were regular dolphins that aren't as pretty and don't get cast on television. Maybe they just refused to sell out and see a plastic surgeon. I held up a fist to them. Represent.
The deep roar of the ocean.The break of waves on farther shores that thought can find.The silent thunders of the deep.And from among it, voices calling, and yet not voices, humming trillings, wordlings, and half-articulated songs of thought.Greetings, waves of greetings, sliding back down into the inarticulate, words breaking together.A crash of sorrow on the shores of Earth.Waves of joy on--where? A world indescribably found, indescribably arrived at, indescribably wet, a song of water.A fugue of voices now, clamoring explanations, of a disaster unavertable, a world to be destroyed, a surge of helplessness, a spasm of despair, a dying fall, again the break of words.And then the fling of hope, the finding of a shadow Earth in the implications of enfolded time, submerged dimensions, the pull of parallels, the deep pull, the spin of will, the hurl and split of it, the fight. A new Earth pulled into replacement, the dolphins gone.Then stunningly a single voice, quite clear."This bowl was brought to you by the Campaign to Save the Humans. We bid you farewell."And then the sound of long, heavy, perfectly gray bodies rolling away into an unknown fathomless deep, quietly giggling.