The only Time-Turner I can use

Devices that loop the same time over and overoften appear in sci-fi.It is intriguing how, when characters change their actions,the world shifts as a result.

I have known a similar experience.Reading a favorite novel I have finishedonce more from the beginning.To my eyes, knowing the end,the same scenes appear in a new light.Every time I revisit it, there is a new discovery.

Of course, the text does not change.Yet the impression I receive does.For me, that is enough to say the world has changed.