Automation Will Deflate A Fiat Economy

At the expense of mass unemployment, but people can and will adapt, with new jobs being created as a result of old jobs vanishing. But then again, since fiat isn't even real money, and stuff like interest and inflation are supposed to checks/balances against fiat, wouldn't deflation and automation be the counter to those 2? Of course though, most people still believe in the lie that fiat currency has any real value, when it doesn't at all unlike commodity backed and commodity based currencies. Although if we wanna get real philosophical, then money in of itself doesn't have any value unless it's valued by other people in a society.