<p><pre><code>  &gt; not prioritizing higher level concurrency tools because you have the
  &gt; borrow checker is a mistake.
</code></pre>
Ahh, but to mix up your analogy here, the borrow checker is the engine, and the higher level tools are like building fancier cars. You have to get your foundations built before you can build higher-level things on top of them.<p>Now that we have a foundation, these things are starting to appear. See <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10131429" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10131429</a>, for example.