Time, Risk, and the Logic of Finance
Why time and uncertainty make financial decisions difficult, and the six fundamental principles that guide financial analysis.
By the end of this module, you should be able to:
- Explain why finance applies to both personal and corporate decisions.
- Identify the main participants in the financial system.
- Distinguish between valuation and management.
- Explain why accounting is the language of finance.
- Distinguish between stock variables and flow variables.
- Explain why time and risk make finance difficult.
- Describe the six fundamental principles of finance.
Why Time and Risk Make Finance Difficult
Two factors make finance challenging: time and risk.
Cash flows now are different from cash flows later. A dollar today is not the same as a dollar next year because money can be invested, interest can be earned, and inflation can change purchasing power.
Risk means the future is uncertain. Under perfect certainty, financial decisions would be much easier. Risk creates the need for probability, statistics, historical data, and models of uncertainty.
Which would you rather receive?
Risk aversion means that, other things equal, people prefer less risk to more risk when risk is defined properly.
- · When will I receive cash flows?
- · How uncertain are those cash flows?
- · What return compensates me for waiting?
- · What return compensates me for bearing risk?
Six Fundamental Principles of Finance
A website claims you can earn 20% per month with no risk.
You can receive $100 today or $100 next year.
A company's management recommends a merger that increases executive bonuses but may not benefit shareholders.
A company reports unexpectedly strong earnings. Many investors want to buy the stock.
A trading strategy worked well for years. Then many investors copied it, and the profits disappeared.
An insurance company sells policies that help homeowners transfer the risk of fire damage.
The final lesson connects this framework to the full course roadmap and asks you to apply it to yourself.
Time and risk make finance difficult; six principles give it a working logic.
- Money today differs from money tomorrow because of investment, interest, and inflation.
- Risk creates the need for probability and models of uncertainty.
- The six principles are approximations — useful starting points, not perfect laws.