I must be overlooking something incredibly simple:

All I want to do is output a list of any content nodes where a certain property is true.

<ul>
    @foreach (var item in @Model.Children.Where("certainProperty = true"))
    {
        <li>@item.Name</a></li>
    }
</ul>

... Works just fine for the Children of the current node. (Obviously).

However,

<ul>
    @foreach (var item in @Model.Descendants.Where("certainProperty = true"))
    {
        <li>@item.Name</a></li>
    }
</ul>

... Outputs nothing.

What am I missing?