Passage Summary: Even if we can guess what a person will do next, that doesn't mean we understand why they did it, because understanding humans requires knowing their goals.

Conclusion: Successfully predicting human behavior does not equate to understanding that behavior.

Reasoning: Understanding human actions requires knowledge of the actor's goals, a requirement that does not apply to the physical sciences or nonhuman behavior.

Analysis: To find the conclusion, look for the claim that the rest of the sentences are trying to prove. The word 'for' in the final sentence is a significant indicator, as it introduces the evidence for the preceding claim. The author is arguing that prediction and understanding are two different things when it comes to people. Focus on the sentence that distinguishes prediction from understanding as the main point.