Season two of the BBC’s reboot of the Arthur Conan Doyle classics concludes with Sherlock¬†coming full circle as he again faces off against his nemesis, James Moriarty. Our hero finds himself ensnared at the centre of a web of lies of Moriarty’s making, as he battles to save both his own reputation and the lives of his closest friends.

Spoilers below …

I stumbled across this poster recently and – aside from the fact that you probably have to be of a certain age to understand why cassette tapes and pencils went together – it got me thinking about the various audio storage and playback formats which I have come across in my lifetime.