Here’s where it gets personal. Every day, you run experiments on your own life: trying a new route to work, a different breakfast, a fresh playlist. You’re always testing hypotheses, even if you don’t use a spreadsheet. The p-value is just a tool to formalize what your gut already does.
The next time you get a result that surprises you—in Excel or in life—pause and ask: Is this real, or is this random noise? You might not have a formula for that, but you do have a brain that knows a good story when it sees one. And if you want to be sure? Open Excel. Run the test. Let the numbers do the talking.
Just don’t forget the beer history. It makes everything taste better.
