Memory must be everything. Have a recollection of what happened yesterday in order not to repeat yesterday mistakes. Nothing is new under the rainbow, so remembering what happened 40 years ago must be a doodle.

As an example, in which order did you buy these vinyl records by Spirit? Did you buy the first one first, or the second and third one first. And if you don't remember how come you don't remember simple things like buying vinyl records 40 years ago? And in which order?

These are the burning questions Jimmy Page had to answer in court the other day when questioned if he had plagarised song by the band Spirit and turned it into one of Led Zeppelin's most famous song Stairway To Heaven.

So make a mental note right now of remembering yesterday so tomorrow it will not be forgotten.

Rolling Stone have published Jimmy Page's testimony from the trial where all is reveiled.