It probably changes.
When the put / call ratio is high, the stock does what?
That depends.
Why does a high volume of open puts affect the price of the stock?
Why do you think it does?
If you buy a huge number of puts, the specialist selling them to you will hedge his sale by shorting the underlying stock. Are you claiming that someone who sells you a CDS will borrow and sell the debt? I thought the complaint about CDS was they were unhedged, naked gambles?
Where did you go? You almost sounded like you knew what you were talking about. LOL!