We all know the sketch, of course – a scene in the Nag’s Head where Trig is extolling the virtues of his depot broom.  “This old broom has had 17 new heads and 14 new handles in its time”.

Oh, how we laughed.

What is less obvious is the profound metaphysical point he was making.

It’s reckoned that every cell in the human body dies and is replaced within a seven year period.

So just like Trig’s Broom’s conundrum, Trig himself, you and I are entirely different people cellularly from whom we were seven years ago; and before that, and before that…

So a metaphysical, some might even say spiritual question arises, “What, throughout your life, keeps you, you?”