Out of step with no change

The deal on debt produced nothing. So why did the market tank? I understand when the market goes up following some unexpected good news. The news had been bad for a while. All these bright guys moving the markets did they really  expect major things? Why was the market high in first place? And now the debt rating of the US is lower. Nothing changed and nothing is surprising. Why was it not lowered a month ago?
Is it true that  the market is run by bots?
Hey bots, tell us the truth.

The vision thing

 The debate was about respecting the US contractual obligations. It also marks the moment when the country understood  it will need to contract. economically   Contract like in  no more ....

Cui prodest

Nobody liked this deal. Is this a rational criteria? So everybody can revel in the opponent's discomfort.Lose-lose strategy where the driving force is the hate of the other. A meeting of minds on the periphery of rationality.