Ha ha, brilliant. We found a golf ball yesterday in the middle of nowhere in Pembrokeshire, right up on a mountainside. So maybe when our civilisations are long extinguished, those ubiquitous little white balls will be the future equivalent of pottery shards and flints....

Haha, I have previously mused here about how future archaeologists (probably of a cockroach evolution) will interpret the mysterious rows of postholes stretching across miles of countryside, sometimes in parallel lines. What ritual function did they serve? Were the poles carved with fantastical creatures, or painted in bright colours? I'm talking of course about telegraph poles.