Marketing is the set of human activities directed at facilitating and consummating exchanges.

When it comes to efficiency and effectiveness, I would always start with effectiveness. I am interested in achieving a certain outcome. Only secondarily do I worry about achieving it as efficiently as possible.

Most of the productivity gains appear to go to the top 1 percent. Most people don't have enough income and as a result, they borrow additional money by using their credit card and they fall into high debt. The result of the growing income gap is a slower growing GDP (too few people with money to spend) and a rising tide of indebtedness.

I would favor three policies: raising the minimum wage to $12, closing the tax loophole where persons only pay a 15% income tax on long term capital gains (tax it at the full tax rate), and institute a progressive tax moving the highest tax rate from 39.6% to 45%. I would favor implementing these three policies in that order, starting with raising the minimum wage, but not stopping there.

One of the major causes of poverty is a lack of family planning. Governments and nonprofit organizations need to encourage poor people to use birth control so that they don't have unexpected babies, which will only make poorer families poorer.

Strategy is indeed about choosing what not to do as well as what to do. A business unit needs to decide what need it aims to satisfy in what group of people and with what value proposition that distinguishes the business from its competitors.

Curiosity is the starting point for great science.