[Baron Munchausen]

An interesting problem of SciFi is whether 'non-psychic' races have any ability to control access to their thoughts or if being 'psychic' is something completely outside normal mental abilities and 'non-psychics' are completely helpless in the 'psychic' realm. Different authors decide on different solutions. I see you have decided that normal minds can discipline themselves somehow or other and achieve some power to control access to their thoughts. If this is so, can they also learn to 'reach out' to other minds?

You see the paradox I am leading up to? If 'normal' minds can resist being read then they have the ability to control those same 'thought emanations' that psychics use for distance communication. So why would there be any genetic barriers to being completely psychic? Wouldn't training up to 'full abilities' necessarily be possible?