No such thing. Buzzword fallacy.
Day to day purchases can be handled by silver. That is silver's role originally. Large purchases were made with gold (such as payroll).
It is not barter, technically or otherwise. Gold is just a medium of exchange when used as a currency. It is the same with silver. It is the same with any fiat currency.
Some do.
A dollar is a unit of weight in gold, as well as a unit in a fiat currency.
Non-sequitur fallacy. There is nothing inherently deflationary about gold, silver, or any other currency.
Blatant lie. It is easy to test the purity of weight of gold.
Why?
I will call this argument 1.
So?
I will call this argument 2. You are now locked in paradox. You are also ignoring banking laws.
Silver is, though. So are fiat dollars.
Fiat money is not fake money.
Some real estate sellers DO demand payment in gold.
More common, but usually they just buy land again.