Image of a young girl, labeled “emotional creature.”

Welcome to the second instalment, in which we up the academic ante by introducing the science of happiness and revelry. But we have to take the long route, via some prior knowledge, otherwise when we arrive, the science means nowt.

So brace yourself for some emotional spillage and a trip down memory lane to when Raquel Welch gave birth to the human race. These were ancient times when the dogs bow-wow-wowed, we went wild in the country, and the snakes in the grass were absolutely free.

Then we get you in a vice-like grip and pop your bonnet to reveal a whole tangled mess of spam and Nigerian princes. I explain ...

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