Cash payments chain the whole way down. Small businesses can't pay unofficial employees under the table because they don't have any gray market profits to do so with. This means you can't get a job under the table, which means you're paying maximum income taxes and your employer is paying maximum employment taxes and a bunch of money to accountants for compliance and filings.
goldbug
Not really. I have a couple silver coins. The point about paying with physical cash isn't that it's resistant to inflation, rather that it enables the small business you're buying from to choose to not report that sale to the government. "Cash transaction," just like how you don't tell the IRS about when you sell your old computer on Craigslist for $1000. When everyone uses cards, everyone pays the maximum taxes.