Passage Summary: You can't really 'predict' a new invention because by the time you've described it well enough to count as a prediction, you've actually just finished the act of inventing it.

Conclusion: The concept of predicting an invention is a logical contradiction.

Reasoning: To predict an invention, one must describe it in detail, but describing it in detail is the same thing as inventing it, and you cannot predict something that has already happened.

Analysis: This is a 'Method of Reasoning' question, so focus on the structural 'how' of the argument. The author proceeds by defining the necessary conditions for two terms—'prediction' and 'invention'—and then showing that these conditions overlap in a way that makes the terms mutually exclusive in time. You are looking for an answer that describes this process of showing a concept to be self-contradictory based on the definitions of its components. The author isn't looking for evidence; they are looking at the internal logic of the words themselves.