What's the matter with him?

My dog is strange. He is weird. I really don't understand what goes on in his head. He doesn't dare cross a cord that happens to just lie on the floor, ie the electrical cord to my laptop. But he's got absolutely no problem having the same cord over him when he's on the floor by the sofa where I sit and write this entry. He's terrified of tings on the floor, if we move a chair for instant. He looks like he thinks it can fall over him every moment and chrush him like a flie. But he doesn't mind squeezing in between a chair, a small table and a bike, preferably with an electrical cord or two in the front, so he can be completely surrounded. It acutally looks like this makes him feel safe and secure. Go figure!