Authors:

I don't know how long a child will remain utterly static in front of the television, but my guess is that it could be well into their thirties.

A. A. Gill (2008). “Paper view: the best of the Sunday Times television reviews”, Orion Pub Co
I don't know how long a child will remain utterly static in front of the television, but my guess is that it could be well into their thirties.