Although I've been coding #JetpackCompose for several years now, sometimes I still make basic errors
I had the following code
```
var someValue = rememberSaveable { 100 }
```
and was wondering why the value was not restored on orientation change. It always had the initial value of 100. Well of course Compose doesn't magically keep track of all variables. It must be a `MutableState` so that Compose tracks value changes and is able to restore the state via rememberSaveable. Duh!