Your point doesn&#x27;t change mine, the parent said you have to know about the world you&#x27;re disrupting, for example the taxi world (my example).  But you don&#x27;t have to know anything about the taxi world to make a taxi app (as you put it) and a ten billion dollar company around it.  You don&#x27;t need to &quot;live in&quot; the industry or sector you&#x27;re disrupting.