Of course, you’re quite right that no one has confirmed RT’s account of the day’s activities. I venture to guess that on any given day most of us aren’t specifically witnessed going about our activities, so I don’t find that absence of a witness particularly significant. RT certainly didn’t do himself any favors by his statements and actions after Barbara disappeared, and we are inclined, for good reason, to suspect husbands/partners of missing women. He isn’t particularly likable IMO, and there is always the possibility that there were nefarious doings that day. But if there were, I wouldn’t expect RT to leave Barbara’s remains in the general vicinity where he reported her missing and an extensive search would take place. While we can come up with reasons why he might have needed to do that, the simpler explanation that Barbara succumbed to the heat/dehydration better satisfies Occam’s Razor IMO, without casting RT as her killer on flimsy evidence or less. As you said, we may never know, which is such a shame for her family.
