English is not my native language and I'm left wondering. Does he talk about the why he thinks the laws could change ? It sounded to me like a vague hypothesis but I'd love to understand better.
If I follow my own musing after watching this I would say time could be the path of least information in an isotropic adimensional space. The axis or path along which compression is the easiest. This would explain nicely why how our brain handles it in such a particular way. If Lee Smolin is wrong it would be the path along which energy cannot be absorbed and entropy can't increase as state relationships are static. Something like a visible effect of the strongest possible force. This could be a simple definition of time. Sadly I'm a layman and most probably completely off the mark.