From the mouths of innocents

At dinner today my nephew asked me if K (the current man) was a replacement of  B (previous man), and was B a replacement of E (man before B). Um, yes, I mumbled embarrassedly thinking how this easy-replacing of men in life must look to him. Since we see each other only once every six months or so he has short experience of any of the potential 'uncles' so far. If only the reality of it was as easy as 'replacement' makes it seem, like swapping batteries when they wear out or something.