Two different coins

There are 2 ways to earn money.
The first way is to give someone something useful and get paid. The second way is to get paid.

There are 2 approaches to investment.
The first way is to acquire something lesser than the total income generated over its useful lifespan. The second way is to sell something more than it was paid for.

There are 2 types of opportunities.
The first type arises from the difficulties in creating something useful. The second type takes advantage of other people’s crisis.