Final answer:
Weather forecasts are crucial for decisions in agriculture, and physics aids in predicting weather through an understanding of atmospheric phenomena. While important for outdoor activities, forecasts are less useful for decisions unrelated to weather, such as indoor activities or career planning.
Step-by-step explanation:
The ability to predict the weather is essential for many decisions. For instance, farmers use weather forecasts to make decisions on when to plant and harvest crops. In the social media age, access to this information has greatly improved, allowing for more precise and timely decisions that can significantly affect crop yields.
In addition, physics plays a key role in weather prediction by helping to understand the dynamics and movement of weather phenomena. For example, forecasters use tools like Doppler radar to track and predict weather patterns, which can provide advantages like detecting precipitation intensity and movement, which can be vitally informative for a range of activities.
Knowing the weather forecast is least useful for activities or decisions that are not affected by weather conditions. These can include purely indoor activities or decisions based on factors unrelated to weather, such as choosing a field of study based on job availability or playing games in a casino.