In "The Ascent of Money: A Financial History of the World," Niall Ferguson explores the evolution of money and finance, highlighting how modern currency exists mostly as digital figures rather than tangible cash. This shift emphasizes the abstract nature of money in today's economy, raising questions about value and trust in financial systems.

Ferguson’s assertion that “most money is invisible” reflects a profound transformation in how we perceive and interact with wealth. As electronic transactions dominate, money becomes increasingly intangible, challenging traditional concepts of ownership and economic stability.