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Could Vice President Joe Biden鈥檚 incessant smiling (or smirking, depending on your point of view) during the debate have been deliberate?

By asking this, we don鈥檛 just mean that Mr. Biden had a strategy to be aggressive and try to disqualify his much younger opponent by refusing to appear to take him seriously. That's obvious enough.

No, we鈥檙e wondering if something even more calculated could have been going on.

Here鈥檚 our thinking: There was much to criticize about President Obama鈥檚 performance in last week鈥檚 debate 鈥� but the biggest failing, in the eyes of many of his supporters, was his lack of animation and firepower. He just seemed disengaged, so flat and feeble that viewers on both sides of the aisle agreed he鈥檇 essentially ceded the stage.

Biden鈥檚 challenge Thursday night was not only to reenergize dispirited liberals 鈥� but, maybe even more important, to set the stage for Mr. Obama鈥檚 next debate, which comes in just four days.

This time, Obama clearly will need to raise his energy level and give a more impassioned performance than the one he turned in last week. But he can鈥檛 appear too heated, too dramatically different 鈥� or the effort could seem artificial and even desperate.

This is the trap that Al Gore fell into back in 2000. Widely criticized for his demeanor in his first presidential debate 鈥� particularly those now-infamous sighs 鈥� he made an obvious effort to change his approach in the next round. The result? He was panned again, this time for what seemed like a too-transparent attempt to be more likable.

So the challenge for Obama will be to carefully calibrate his next performance, correcting his previous mistakes without making it seem like he鈥檚 overcompensating.

And that鈥檚 where Biden鈥檚 incessant, aggressive smiling comes in. By taking his own animation level right through the roof, Biden may have given Obama a little more room to emote on Tuesday, without seeming like he鈥檚 overdoing it.

Because everyone just saw what overdoing it looks like 鈥� thanks to Biden.

As MSNBC鈥檚 First Read : 鈥淏iden 鈥� by turning his volume to 11 last night 鈥� takes some 鈥� pressure off the president. If you've followed Obama over the past six years, you know it's not his style to be overly aggressive. Well, Biden last night both gave Obama a road map for how to attack Romney-Ryan (on abortion, tax fairness, foreign policy), and he gave him room to do it in the way he feels most comfortable.鈥�

The really interesting question is whether Biden possibly did this on purpose. True, putting in an over-the-top performance may not ultimately help him in his own presidential ambitions. But if Obama loses the election, Biden鈥檚 presidential hopes go up in smoke, anyway.

In other words, sometimes you have to take one for the team. And while it may ultimately be too much of a stretch, it doesn't seem entirely impossible, either, that on Thursday night, Biden may have done just that.