Financing choices that are costly to reverse or change involve sunk investments in arranging the financing
Firm’s financing choices may credibly commit the firm to a particular course of action observable by competitors, suppliers, customers, employees, and stockholders
Financial strategy includes choices like using financial contracts to address or overcome informational asymmetries between entrepreneurs and investors
An option is the right, but not the obligation, to make a decision and take an action in the future
The value of an option depends on the market price of the underlying asset, volatility of the price, time to option expiration, and time value of money
The cost to acquire an option is called the "premium"
Decision trees are a good way to conceptualize strategic alternatives involving real options
Decision trees impose discipline on the evaluation process and are used to evaluate connections between decisions today and the future value of the venture
Multicellular organisms require specialised exchange surfaces for efficient gas exchange of carbon dioxide and oxygen due to a higher surface area to volume ratio