The document analyzes whether people are truly a company's biggest asset by examining the key factors that determine a company's profitability: income, costs, and people versus machines. It argues that while machines have predictable costs and outputs, people are different in that one person has the potential to exponentially grow a business and improve their performance over time, thereby increasing a company's income and profits to a greater degree than any machine. Therefore, the document concludes that describing people as a company's biggest asset is accurate.