I think that they do odd things and it doesn't make sense to try to analyze their actions. They are adults, they know how to talk, they know where to find you. If anything has changed or is changing in their minds they will open their mouths and say so.
Perhaps its just another thing to look and and say "curious", shake your head and walk on.
If I shook my head every time my WAW did a curious thing in the last year, I would have the worst case of whiplash ever seen!
