[throwanem]

If beavers had done that, why wouldn't we tell that story with beavers? They certainly do on occasion damage a local ecology whose hydrology they've failed to entirely consider. Their scope is smaller than ours in that regard, I grant, but I've also seen spiders and wasps perform feats of engineering that many wouldn't credit. I don't see reason to think what qualifies a project as the respectable product of ingenuity is only its size or the species of those who pursued it.

Addressing the question at hand is an improvement, but arguing your case entirely from assertion and anecdote leaves considerable further scope. You claim the difference is of kind rather than degree. I can see some credible arguments for that claim. Can you?