Yes, but for some peripheral skills that might help but aren&#x27;t really &quot;necessary&quot;, this rule makes a lot of sense. I mean, spending 100 hours on a skill definitely wont make you an expert, but it&#x27;ll make you literate in it. Taking the sales example, as a programmer it might teach you how to &quot;sell&quot; yourself to forge a better career. Or say public speaking.