Developer Placebo is term said to substances that are believed to increase and improve your software development skills but don't really. An example f these substances could be dark chocolate, Cheese Doritos, matcha, everything vegan
Mike: Yooo bro you should start drinking match, you will be a better software developer
Kyle: No man I became a vegan and I'm writing better software ever since!
John: Guys. You know that is just developer placebo, right?