MLA

Many of our daily decisions are informed by the information we gather from established instruments. If we hear that the barometer is showing a drop in the air pressure, we can plan for changes in the weather.  When we read that GDP (gross domestic product) has been on a steady rise, it gives us financial confidence. And when we see a normal blood pressure reading, that is one indicator that our health is on the right track. These three instruments help to predict what might happen next in domains that affect us all--the economy, the weather, and health.