ot have any type parameters -->

<!-- * must not use `Self` -->

<ul>
<li>どのような型パラメータも持ってはならない</li>
<li><code>Self</code> を使ってはならない</li>
</ul>

<!-- Whew! As we can see, almost all of these rules talk about `Self`. A good intuition -->

<!-- is “except in special circumstances, if your trait’s method uses `Self`, it is not -->

<!-- object-safe.” -->

<p>ひゃー！
見ての通り、これらルールのほとんどは <code>Self</code> に�