One things scientists do is to perform experiments.
Some experiments are really technical. Measuring the position of atoms or the properties of a supernova. Determining what nutrients an amoeba needs to thrive and how to diagnose prostate cancer.
I don’t know how to do any of these. I know that there are people trained to find the answers. As experts in their field, they have experience and skills that are more trustworthy than my friends.
Even so, my friends and I can all do experiments. We don’t need to pick up a ruler or pencil. No paper, measuring cup or calculator needed. You can do the same.
The most powerful experiments are thought experiments. Human minds have intense abilities to imagine.
A thought experiment uses that imagination to reveal the truth.
What if ….