Logic, the unsung hero of problem-solving. Without it, we'd still be living in the dark ages, wondering why the wheel didn't work.
When in doubt, ask yourself: "Is this a thing that exists?" "Is this a thing that's possible?" "Will this make me look cool in a meeting?"
Avoid the pitfall of the "because it's a good idea" trap. That's just a fancy way of saying "I have no logic, but I'm willing to wing it."
6. Check the Math