itself or in a test scene that doesn&rsquo;t have a UI, the <code>get_node()</code> line will cause a crash.</li><li>You can&rsquo;t change your UI. If you decide to rearrange or redesign your UI, the path will no longer be valid and you have to change it.</li></ol><p>For this reason, you should try to avoid using node paths that go <em>up</em> the scene tree. In the above situation, if the player instead emitted a signal when the health changed, the UI could listen for that signal to update itself. You cou