"But in general, take my advice, when you meet anything that's going to be human and isn't yet, or used to be human once and isn't now, or ought to be human and isn't, you keep your eyes on it and feel for your hatchet."
Thus Mr Beaver to the Pevensie children. He is speaking, of course, about the White Witch, who falsely claims human descent.
Now, in Narnia it is fine not to be human. Aslan is not human. ("Aslan a man! Certainly not." - also Mr Beaver.) The problem is anything masquerading as human, or trying to take a role which belongs to human beings.
Anyway, you can draw your own conclusions, but I tend to think that Mr Beaver is on to something and that he could have been talking about technology as much as witches.
