I think it's fantastic in any case. Opportunity just wanted to show up the newcomer, Curiosity and steal the limelight for a bit. So, if it turns out to be an overturned rock, then it makes me wonder ... Opportunity is not very good at doing that sort of thing on purpose, is it? I mean can it do that sort of thing with its arm, or is that too difficult of a maneuver? Probably would damage valuable instruments, trying to mess around with that.
But for Curiosity, it could repeat this kind of exercise often, right? It could use its scoop to overturn small rocks, I think.
.. And it's really too bad they didn't see the overturned rock for a few days. They were too slow to have seen the hermit crab that walked away in the other direction in search of a new home.
![Smile :-)](./images/smilies/icon_smile.gif)