Not in my experience.  I once helped build a team of Elixir developers.  There were few people who knew elixir at the time.  That simple filter ended up getting us a really great team-- much better than interviewing a bunch of applicants from with other language backgrounds-- the people who wanted to learn elixir, knew it, or were interested in it, were much better than average.<p>In fact, that&#x27;s the only effective filter I&#x27;ve found for interviewing.