Here are two conclusions of what might have happened to Bob:
I. Either Bob disappeared of his own free will, OR
II. Some other person(s) forced Bob to disappear.
Lets try to eliminate (I) or (II).
If Bob vanished on his own, we know that Bob could not have walked far given that:
a) his car was still in the driveway;
b) he was 81 y.o.
Also, if we ASSUME that Bob only had ONE pair of eyeglasses, then Bob definitely could not have vanished on his own even if he had intended to harm himself because without eyeglasses, Bobs vision would have been so poor as to make him dysfunctional. Bob without vision correction glasses would be like a person with sight groping about in the dark, attempting to move and do things in the dark and who would have to perform activities such as walking as slowly and carefully as possible so they wouldnt make any incorrect moves and bump into things, tripping over things, etc.
Furthermore, since Bob has NOT been sighted after 3+ years (since mid-July 2009), we can safely conclude that Bob did NOT disappear on his own because again, if Bob had gone off on his own and even if it was to do himself harm, he could not have been able to walk too far without his car and at his age, hed likely have to make multiple stops to rest and rebuild substantive strength to continue walking by foot. So even at the slight chance that he might have intended to do himself harm and went off into a ditch somewhere or hid/starved himself somewhere, regardless of whether he wore or didnt wear his eyeglasses, he/his body would have been found by now given the short perimeter from his home with which he could have walked off on his own at his age and without a vehicle. Assuming that LE searched everywhere within walking distance from Bob's home and the fact that Bob nor his body has been found means there was definitely foul play.
Therefore, we can definitively conclude that some person(s) other than Bob helped or forced Bob to disappear by either hiding his body in their vehicle or driving him off as a passenger in their vehicle somewhere. Thus, conclusion (I) can be eliminated. We're now left with conclusion (II).
Ill write the possible foul play scenarios later, when I have more time.
