We have "only one President at a time," Barack Obama said in his debut press conference as President-elect. Normally, that would be a safe assumption - but we're learning not to assume anything as the charcoal-dreary economic winter approaches. By mid-November, with the financial crisis growing worse by the day, it had become obvious that one President was no longer enough (at least not the President we had). So, in the days before Thanksgiving, Obama began to move - if not to take charge outright, then at least to preview what things will be like when he does take over...