Complex sentence: Take for example, a hammer, it is ready-to-hand, we use it without theorizing, in fact, if we were to look at it as present-at-hand, we might easily make a mistake.
Split into simpler sentences: Take for example, a hammer: it is ready-to-hand; we use it without theorizing. In fact, if we were to look at it as present-at-hand, we might easily make a mistake.