Not all debt is bad. From time to time we should get into debt when there's a good reason for that.

Your immediate environment is comprised of coffee shops, supermarkets, websites, apps and all kinds of things - none of which have an interest in your long-term or short-term financial well-being.

To summarize, using money to motivate people can be a double-edged sword. For tasks that require cognitive ability, low to moderate performance-based incentives can help. But when the incentive level is very high, it can command too much attention and thereby distract the person’s mind with thoughts about the reward. This can create stress and ultimately reduce the level of performance.

Money is a wonderful invention. It lets us save, it lets us specialize, right? I couldn't be a professor if there wasn't any money. Every day I would have to raise chicken and bread and broccoli and go ahead and spend all my time trading. So, money is a wonderful mechanism.

If you get people to feel that they are putting something, that they are creating it and so on, their love for the project would increase. The more something is yours, the more you're willing to invest in it.

While we somehow understand revenge on an intuitive level between individuals, I do suspect that companies, assuming that people are rational, completely miss and underestimate the motivation people have for revenge.

We are all far less rational in our decision-making than standard economic theory assumes. Our irrational behaviors are neither random nor senseless: they are systematic and predictable. We all make the same types of mistakes over and over, because of the basic wiring of our brains.