The truth that lies within is quite scary when it arrives during moments of self reflection and quieting of the mind. It also opens our minds to the fact that what actually exists is far more than we can ever perceive by natural or artificial means. I view observable reality as only a reflection of the greater existence, or more accurately a time delay, of the real thing, since we cannot experience "now" with our senses. Quantum entanglement can tie us to any other point, or all points, at the same moment. Is it possible that this can happen biologically? I have a cousin that saw his mother when she died. She was hundreds of miles away. When he get the call minutes later he got serious chills. This may have been an instance of spontaneous entanglement between two beings, one stopping by for one last time. I don't believe in ghosts. But, I do believe the search for truth needs to take us wherever it leads.