The Blackwell theorem is a fundamental result in decision theory that addresses the comparison of two decision-making strategies. It states that if one strategy consistently yields better outcomes than another across all possible scenarios, then the superior strategy is considered "better" in a broader sense. This theorem helps in understanding how to choose optimal strategies when faced with uncertainty. In practical terms, the Blackwell theorem provides a framework for evaluating different options based on their expected performance. It is particularly useful in fields like economics, statistics, and game theory, where decision-makers must assess the effectiveness of various approaches under uncertain conditions.