The Null Hypothesis

You may have heard about the null hypothesis, but what does it mean? It means that you need to begin an experiment with the idea that nothing will happen, like there will be no changes in what you're studying when you change variables. Tom Scott explains while following an experiment, which has to do with reading brain waves in zero gravity. Remember, when you do an experiment and nothing happens, it's not a "failure." You've learned that something doesn't make a difference. Yet that lesson isn't sexy enough to get publicity or encourage further funding, which in itself is a variable that affects scientific research.