then the decision has been effected for him without any proactive effort on his part.

Was in a rush when I posted earlier on, and it is only on re-reading the original query, I now realise, that Guest's poser is directed at a situation where the outcome is decided by the lack of action on the part of the 'Hamlet'.

In a situation such as this, (the train e.g.,) where an outcome is inevitable, procrastination would result in, 'a fait accompli'. ..?