Bitcoin and dollar has different uses but I strongly believe bitcoin will replace online payment system like cards and ecurrencies but dollar is hard cash backed by central bank so chances of bitcoin replacing dollar is almost zero
First of all,Showing respect both of your believing.Regarding the following report ,I'm quite opposite that they believe.Dollar and Bitcoin seems like different in touch .in where FIAT currency like Dollar controlled by central banks.It's hard to believe that central bank of any country could be allowed cryptocurrency bitcoins even didn't possible primary choice!