The two are sitting on the floor, surrounded by various toys. The child plays with some of these, and sometimes hands one over to the parent.
Language enters the play quite naturally.
Thank you , says Dad. When we look at the simple forms of language the mental mist which seems to enshroud our ordinary use of language disappears. We see activities, reactions, which are clear-cut and transparent. On the other hand we recognise in these simple processes forms of language not separated by a break from our more complicated ones. We see that we can build up the more complicated forms from the primitive ones by gradually adding new forms.