Do you believe that ghosts are real?

I have a theory that ghosts as we know them to be are nothing more than spiritual recordings taken at the moments of their death. Think about it, we are spiritual beings that are also electrical as well, the earth is surrounded by a magnetic field, not unlike the recording heads on analog devices, those who die violently disrupts the magnetic fields surrounding us, and they get "recorded". However, other spiritual beings exist as well, both benevolent and malevolent, Professor Carl Sagan once said that in our vast Universe, to believe we are the only ones is quite ignorant (paraphrasing).