title: Difference between an it block and a specify block in RSpec
body: <p>What is the difference between an it block and a specify block in RSpec?</p>
  
  <pre><code>subject { MovieList.add_new(10) }
  
  specify { subject.should have(10).items }
  it { subject.track_number.should == 10}
  </code></pre>
  
  <p>They seem to do the same job. Just checking to be sure.</p>