16.6c5.86 17.2 9.04 35 9.69 52.73.5 13.9 17.45 20.44 27.29 10.6l37.1-37.1c59.28-59.26 59.28-155.7 0-214.96z"/>
      </svg></a> </h3>
<section aria-labelledby="toc_a-word-on-promises">
<p>Ember's approach to handling asynchronous logic in the router makes
heavy use of the concept of Promises. In short, promises are objects that
represent an eventual value. A promise can either <em>fulfill</em>
(successfully resolve the value) or <em>reject</em> (fail to resolve the
value). The way to retrieve this eventual 