Don't forget that not everyone will be voting in person. We don't yet know how many postal votes there will be, but if previous elections are anything to go by, it'll be a fair number. So not everyone will bother to go down to the polling station, but they may still vote by post.
Which brings up an interesting issue. Let's imagine the result is quite close, due to the effect of 'armchair supporters' on the No side not bothering to turn up. Could the referendum be decided by postal votes?
Which conjures memories of various electoral fraud scandals over the past decade, mostly involving postal votes and the Labour party. A High Court judge famously described the UK's voting system as akin to that of "a banana republic". Could we see postal vote fraud, vote stuffing, and other such nefarious practices during the referendum?
Coincidentally no doubt, Douglas Alexander made a speech a few days ago noting that postal votes will go out in less than a fortnight, and urging Labour supporters to "bring home the vote". This signalled a push by large squads of Labour activists in Glasgow to chap on doors. Which I'm sure is all above board.
I do hope though that there will be careful checks on postal votes this time around.