That is just the way that alternative possibility turned out.
Close - the pupil sees the choice as between only a few alternative possibilities.
The other is the existence of alternative possibilities for action.
But he does not use it to generate alternative possibilities that would permit one to have done otherwise.
The chance generation of such alternative possibilities for action does not in any way limit his choice to one of them.
An alternative possibility is less obvious - and also less likely.
He explicitly includes alternative possibilities and the self as a cause so our actions are "up to us."
"We certainly hope it will help to show students a different world and alternative possibilities," he said.
However, there are alternative possibilities that need to be considered.
He studied individual passages and considered alternative possibilities until his head hurt.