Let's examine two auctions that come up all the time. You probably have never given them much thought because they are so basic. What you may not have realized is that there is a magical quality to these auctions that you may have overlooked.
The matchpoint duplicate players, have a high priority on not only making the contract, but scoring overtricks as well. In fact, it is almost de rigueur to risk your contract for the almighty overtrick(s) if the odds favor taking the chance.
When I teach, I emphasize logic because logical thinking is essential at bridge. Logical thinking really amounts to clear thinking. How does one thought lead directly to the next?