But some discussion of the complex relationship between “allohistory” and sf is appropriate here, as the genres overlap in certain ways. Classical allohistory— such as Trevelyan's What if Napoleon had won the Battle of Waterloo? and Churchill's If Lee had not won the Battle of Gettysburg —is a rigorously consistent thought-experiment in historical causality.

Each of these 40 chiliometres has cost 1,000,000 francs, or £40,000, making the total cost of the railway independent of the special rolling stock for working it, £1,600,000, or at the rate of £64,000 a mile.

Now, thinke thou see'st this Soule of sacred Zeale, This kindling Cole of flaming Charitie, Dispossed all in post; not for his weale, But, for his further future miserie.)

Do you think he's done something that we don't know about, and is lying doggo on account of the police?