In this investigation there certainly does not seem to have been much interest in looking any further than the Anthony's home and car, that's for sure. Which is kind of odd, since that's where KC had spent the least time during the time frame. Again, it seems to me, from appearances only, I may be wowed during the trial to find out that there was lots of investigation to find out what happened, who knows, but on the surface it does look like investigators confusing themselves with prosecutors.
Pointless questions? If any of us had a loved one missing, would we find it pointless for investigators to check out every possible scenario? I wouldn't.
How can they find any answers, without raising all the possible scenarios they can think of?