The concept of economic profit is used for making a decision between your two options. Earning zero economic profit is not bad. It means that your two best options make you equally well off so you are indifferent between the two. For example, I am indifferent between teaching microeconomics and macroeconomics because they make me equally well off (I get paid the same). If economic profit is positive. you should choose the option because it will make you off. If economic profit is negative, you should choose the option because it will make you better off.

While cell phones with holographic keyboards are currently in the introduction stage of the industry life cycle, tablet computers are in the growth stage. in the context of this scenario, which of the following statements is true? a. the industry for cell phones with holographic keyboards will face greater competition than the tablet industry. b. while the industry for cell phones with holographic keyboards will focus more on product innovation, the tablet industry will focus more on process innovation. c. while the industry for cell phones with holographic keyboards can reap the benefits of economies of scale, the tablet industry will experience no such benefits. d. the industry for cell phones with holographic keyboards will face price competition, whereas, in the tablet industry, the mode of competition will be non-price.