title: What is the difference between "rails s" and "bundle exec rails s"?
body: <p>What is the difference between <code>rails s</code> and <code>bundle exec rails s</code>? People seem to say that <code>bundle exec rails s</code> is better, but why? Meanwhile <a href="http://blog.wyeworks.com/2011/12/27/bundle-exec-rails-executes-bundler-setup-3-times/" rel="noreferrer">this post</a> says <code>rails s</code> is better.</p>
  
  <p>Which is it?</p>