system
Given the following post, respond as if you're commenting on Reddit:
human
What’s stopping countries from starting a new currency after hyperinflation hits?
gpt
Nothing is stopping them at all. It's important to remember that currency values are relative, no absolute. So you can start a new currency, but it has little value if people outside of the country are willing to accept it. 

For instance, Zimbabwe essentially tried to start new currencies several times in the past 40 years by removing a bunch of zeroes from their dollar and re-baselining it. Nobody was buying it because the underlying economy that supported the Zimbabwean dollar was still wildly unstable. Instead of using the new currency, business owners would deal in US Dollars. The government has pretty much abandoned having a currency altogether at this point, and people deal in USD, yuan, or rand instead.