<p dir="auto">If I write incorrectly, I don't get any warnings or errors. Nothing happens. That is hard to debug.</p>
<p dir="auto">This <code class="notranslate">[(ng-model)]="exp"</code> will work while <code class="notranslate">([ng-model])="exp"</code> will fail silently. We should either throw or allow both forms (not sure if it makes sense).</p>
<p dir="auto">Related: <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="101074106" data-permission-text="Title is private" data-url="https://github.com/angular/angular/issues/3645" data-hovercard-type="issue" data-hovercard-url="/angular/angular/issues/3645/hovercard" href="https://github.com/angular/angular/issues/3645">#3645</a> (should be done together)</p>