<p>What subject of mathematics boosted your problem-solving skills the most? Do you think any subject has helped you think better in day to day life? Perhaps formal logic has helped you make decisions, or statistics has helped you define the limits of what you know. What mathematics would you die without studying? Is there any field that sticks out as having made you feel much more mathematically competent? Or do you think your brain “works better” with exposure to all kinds of logical thinking?</p>
<p>The limit concept.</p>