I've got another one for you. When Thomas Alva Edison interviewed people for a job as a research assistant, he always invited them to eat soup with him at the interview. He was looking for something specific: did they put salt and/or pepper in the soup before they tasted it? If they did that, he did not hire them.

Check it out here: https://www.workforgood.org/article/why-thomas-edison-served-soup-at-every-job-interview#:~:text=When%20he%20interviewed%20candidates%20for,did%20were%20automatically%20ruled%20out.