I want to determine whether a list contains only `null`. `null?` seems like the obvious choice:

```
> (null? null)
#t

```

But `andmap`ing over it is not doing what I'd expect:

```
> (andmap null? '(null))
#f

```

Am I misunderstanding `null?` or `andmap`? I'm new to Racket, but this just doesn't seem right at all based on the docs.