Beach – so many pebbles and rocks on the beach, but no two the identical – different colours, different shapes, different sizes, different histories.
Natural landscape – so much natural vegetation, but no two points on the surface identical – different colours, different species, different sizes, different evolutionary histories.
Society – so many people on the Earth, but no two identical – different races, different sizes, different psychologies, different histories.
Life – so many moments in life, but no two identical – different experiences, different reactions, different emotions, different moments in time (so much forgotten).
Returning to the beach at Hornsea – one pebble was the one seen above (poor focus). Rounded somewhat by sea-bed abrasion but with one side flattened and scratched. Almost certainly these scratches are small striations, the surface of the stone scratched flat by glacial force and the face of that stone scratched by passing jagged stones embedded in the moving ice. If this was the case it would seem likely that the rest of the stone had been previously rounded by abrasion, mostly taking its present form before the last Ice Ages. Furthermore the scratches show three angles of direction which suggests that the stone experienced more than one episode of being ground by glacial action.
Any ‘doubting Thomas’ demanding to see the wounds (scratches), I have the object here. I cannot pretend that there couldn’t possibly be any other explanations, but it is interesting.