On a very simple level, the closing of most of the American federal government can be pinned on the ambitions of one man, Speaker of the House John Boehner.
There is little doubt that Mr Boehner, a Republican, could, whenever he wants, gather enough votes from moderate Republicans and most, if not all, Democrats to reopen the government.
But conventional wisdom says the Republican caucus would swiftly dethrone Mr Boehner. And, interestingly, conventional wisdom and punditry, in Washington at least, don't blame Mr Boehner one bit for holding the government hostage to his career aspirations. Thus is the cynicism of this town today.
Why he is so attached to sticking with such a bruising job is another question. His caucus is balkanised and unruly. This Congress is held in the lowest public esteem since the invention of public opinion polls. And the Republicans are more disliked than the Democrats.
Once seen as a skilled dealmaker, Mr Boehner isn't able to make deals. Never seen as an ideologue, he has now relinquished control of the Republican policy agenda to the party's most ideological faction.
Where's the fun? To put the question another way: Why can't the leader of the party in Congress control the party on the most important issues and votes?
The answers apply equally to Democrats and Republicans. A series of self-inflicted errors by the two political parties over the past 40 years have left party leaders with no whip and little power.