# Calculus Introduction

### Topics

When driving, we try to approach and stay near the speed limit. Well, some of us do, anyway.

Limits in calculus have a similar idea; we’re trying to approach *some number*. We actually pick numbers that are close to *some number*. Infinitesimally close. Maybe too close, like a close talker.
Limits are useful because they get us close to an instant, which is an abstract idea. An instant is difficult to wrap your head around. A limit is much more concrete and mathematical. It brings a sense of peace and justice to a chaotic world. Or is that just us?

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