None but the most blindly credulous will imagine the characters and events in this story to be anything but fictitious. It is true that the ancient and noble city of Oxford is, of all the towns of England, the likeliest progenitor of unlikely events and persons. But there are limits.

None but the most blindly credulous will imagine the characters and events in this story to be anything but fictitious. It is true that the ancient and noble city of Oxford is, of all the towns of England, the likeliest progenitor of unlikely events and persons. But there are limits.

[A] science fiction story is one which presupposes a technology, or an effect of technology, or a disturbance in the natural order, such as humanity, up to the time of writing, has not in actual fact, experienced.