This little number is a deliberately provocative piece of... well, I'm not sure... whimsy? imagination? deception? conditioning of expectation? or just plain broadening of the mind?
I don't know the answer to that, but I think it's a question that all thinking people should take note of, in case the answer turns out to surprise us.
I'm beginning to think that nothing could surprise me any more, but given that all knowledge is now deemed resident on the internet, which is no more than a baby repository at a mere 20 years of age (most of it much less), it does fit very neatly into the challenging notion being presented.
After all, to hide knowledge away for ever it would now only be necessary to avoid it's transfer into electronic form. Only the the most dedicated researchers now resort to hunting down and poring through paper records - it's far too inconvenient.
So how absurd is absurd? I'm quite prepared to...