The idea of using cryptocurrency, like Bitcoin's smallest unit known as Satoshi (sats), as a foundation for an economy frankly speaking, at this age and time, it won't be a great idea for several reasons, though it will be an interesting concept. However, I might be wrong, but there are several practical and theoretical considerations to take into account:

1. Volatility:
Cryptocurrencies, including Bitcoin, are known for their price volatility. This volatility could pose challenges for the stability of an economy, as the value of the currency can fluctuate significantly over short periods. This could affect people's purchasing power and confidence in the currency.

2. Adoption and Acceptance:
For a cryptocurrency to become the foundation of an economy, widespread adoption and acceptance are crucial. Businesses, governments, and individuals would need to be willing to use and transact in the cryptocurrency.

3. Infrastructure:
Building the necessary technological infrastructure to support an economy based on a cryptocurrency would be a significant undertaking. This includes creating secure and efficient payment systems, wallets, and other financial services.

4. **Regulation:** Governments and regulatory bodies would likely play a role in overseeing and regulating an economy based on cryptocurrency. The regulatory environment for cryptocurrencies varies widely by country and could impact the feasibility of such an economic system.

5. Scalability:
As cryptocurrencies gain popularity, they may face challenges related to scalability. Current blockchain technology has limitations in terms of processing a large number of transactions quickly and efficiently.

6. Privacy and Security:
Cryptocurrencies raise concerns about privacy and security. Transactions on a public blockchain are visible to all, which could have implications for personal privacy and security.

7. Inclusion:
Ensuring that an economy based on cryptocurrency is inclusive and accessible to all segments of the population, including those without access to technology or the internet, would be a significant consideration.

8. Global Implications:
 If a cryptocurrency-based economy were to gain traction, it could have implications for the global financial system, trade, and monetary policy.

However, the ongoing development and evolution of cryptocurrencies could potentially shape the future of financial systems in ways that are difficult to predict. I look forward to this concept in perhaps, the next century or more.