I was “enjoying” some gentle lengths of the swimming pool alongside a man and his grandson.

We happened to stop at the shallow end at the same time and I heard the boy – who looked about 10 – say: “Come on, grampa! That’s eight lengths done, only another 56 to go!”

And, with a splash, he was off.

Grampa sighed, but then he smiled and shook his head.

“Experience tells me I won’t make it,” he told me.

“But his enthusiasm tells me that I just might.”

And off he went, in pursuit.

Experience. Enthusiasm. Each on their own has value, but the combination… well… they just might take you further than you ever thought you could go!