I said originally that luck is just the set of things you don&#x27;t know about.  By definition, it thusly can&#x27;t be an &quot;encompassing reason&quot; (implied singular) - it&#x27;s a name that refers to a collection of reasons (a subset of all possible reasons).<p>The discussions of confidence mindset and one&#x27;s control over &quot;success&quot; are orthogonal, but I&#x27;m happy to discuss them.