[mjp]

Johansson says that ‘as an actor, I should be allowed to play any person, or any tree, or any animal because that is my job and the requirements of my job’.

but some actors would do a better job and be more believable in a particular role than others.

[BikerJoe]

If being a tree is beyond their range, they can at least be a stump. Quite a few are mentally equal to the task.