I need to clear this for me - they landed chained, or were chained after landing?
We all know how it is possible to gain amnesia after a big crash, like the experienced shipwreck, right? So from this point of view, they could be just searching for [b]any [/b]answer, not only the right answer, which they can't ask since they couldn't remember who to ask? My guess is to search for more clues at the spot and around, rather trying blindly to rescue someone. In most cases the blind approach proves somewhat deadly, at least