“Mi,mi, little black lamb,”Grandson came to me again gesticulating.“?”No respond. 

I remember Ms W, one of my young colleagues, said to me 20 years ago:“If you do not read Jin Yong, you’d find it hard to have common language with us.”

Still earlier, a veteran colleague said to us present at a dinner table: “We simply have no common language with those buying no shares.” 

I have to follow the baby line to understand grandson.