Is this over-simplification?:
Each searcher, JoyW, DC, KW, etc. should be asked:
Did you walk to the bent tree, move the vines aside, reach down into the water and not feel or see Caylee's remains?
-or-
Did you walk to the bent tree, and not see a garbage bag with a small whitish protrusion, partially submerged?
...cause that is the needle they would have to have not seen in the haystack in order for their experience to be relevant-Seems the defense would be trying to prove a negative.
I can walk the woods, full of deer, all day long and never see the deer bedded down under my nose. I may hear them, yes...but since humans would rely strictly on sight in this instance, because Caylee's voice and movement was forever silenced, they are at a disadvantage-Unless they approached the bent tree.