Do you want the truth about how stable the USD is? The Chinese could destroy it in a matter of hours maybe days, if they wanted to.
Looking at the BTC/USD-rate and than talking about 1 USD=1 USD is also just a pretty stupid USA-centric way to look at it.
You can look at exchange rates to other currencies. You can go to Walmart and look what a loaf of bread costs in comparison to a certain point in the past. That is how you determine the value/volatility of a currency, not by saying 1 XYZ = 1 XYZ.
So, drop the "USD is stable"-Bullshit, if you want a serious discussion and than we can talk about, why USD is more stable than BTC.
btw.
Not saying that it is stable like that.. But I mean when you go to the store you pay the same 2$ for a coke one day from another.
And dont be so harsh with the language.. I dont support the US system either.
I am Danish so I live in a very different culture then people from the US.
All I am saying is that the price isnt as volatile as BTC.
You can't talk about the advantages of BTC over fiat with people, who have no idea about fiat.
But coming back to your question: How do you make the BTC-price stable. The best way, is just to use it. When there is a lot of daily trading volume, the price can not be manipulated that easy.