Okay this thread has me thinking of all kinds of crazy irrelevant questions.
How loud do you have to talk for the spirit beings who can't read your mind to hear you? Can they hear whispers? How close do they have to be to hear you?
How smart are these spirit beings. Of course, they've supposedly been around since the creation of man more than 6,000 years ago. So did they learn all of the 1000's of languages spoken, handwritten and hand signaled that developed over that time.
Can they read my computer screen? Can they detect files in computer memory that haven't been displayed? Can they read emails before I read them?