Well, that's convenient. I can do that too. Roberts was an idiot. Markham was an idiot. Bledsoe was an idiot. Whaley was an idiot.
Why would such a man wait even 30 seconds at a bus stop next to that address?
Perhaps you can provide us with official work and/or school records of Blesoe
et al that would indicate that any of them were officially found mentally-deficient in some way.
In the meantime, one has testimony from Burroughs himself that he had failed the mental requirements needed to be accepted in the military. In fact he was given a card that classified him as 'different'... which, in today's terms, sounds awfully close to 'mentally-challenged, Autistic... or at least Asberger's Syndrome.