title: When is using instance variables more advantageous than using let()?
body: <p>There seems to be a lot of support for using <a href="https://stackoverflow.com/questions/5359558/when-to-use-rspec-let"><code>let()</code></a> in rspec to initialize variables. What are some cases for using instance variables (i.e. <code>@name</code>) instead?</p>