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Here’s a little exercise for you. Grab a piece of paper and a box of wax crayons and draw me a picture of the Loch Ness Monster. Sure it doesn’t exist in any tangible form but you know of it and you can give me your interpretation... Three humps, water, wearing a Tam O’Shanter and kilt... That kind of thing.
Now... turn the page over and draw me a picture of a PMO. Not quite so easy, huh? For a start it’s unlikely to be wearing any fetching head gear – but it’s a much more difficult concept to draw than old Nessie. You can explain in words what a PMO is and does... but what it looks like is far more complex to articulate – even Michelangelo would struggle to paint a masterpiece called “PMO”.