Does time exist? You think this is an absurd question? Think again.
How do we measure time? The answer is: we can't. We only measure physical changes that occured. But this means that what we thought were past, isn't. We can come back to a previous state by simply rolling back every change that has been made since. And your dead wife will come back to life if your house looks exactly like it did a day before she died. Peter Taler's neighbour Knupp is sure about that. Perhaps this certainty is the only thing that keeps him alive. Perhaps for Taler it is too.