Over lunch today Meggan, my resident HP-geek daughter, and I were discussing the events of That Book and the subject of spoilers drifted into the conversation.

So, we wondered, when will it be OK to discuss the plot of That Book in the open (say like at the Pub where we had lunch) and not have to worry about spoiling it for someone?

Sure at the moment letting slip who kicked the bucket in the recent J.K. Rowling massacre may not be appreciated by the person sat at the next table; but revealing that Darth is Luke’s daddy or that Rosebud was the sled comes as a surprise to no-one.

Or at least I hope it doesn’t.

So how long does it take for a well guarded plot point, or characters fate, to move from being a shared secret among those few in the know to becoming an established and accepted part of popular culture?

And I’ll leave you with that thought as I head out West for the pilgrimage to the Nerd-Prom that is San Diego ComicCon – Back next week.