Fascinating lecture! But, he is talking only about humans and and their perception of time. I believe because we age then die, our perception of time is a major driver in our lives..
But, the laws of physics, at least in the microscopic world, indicate that the laws behave perfectly well whether time goes forward or backward. This invariance under time reversal breaks down in the macroscopic world. Stars are born and then die. Certain elementary particles die a time period after they are created. Here then thermodynamics plays a role in defining what I call physical time.
So, I believe there are two types of time: 1) human time driven because we note that hings in nature are born, live a certain finite time, and then die. 2) On the other hand there is physical time. This is time where as one moves from the microscopic world to the macroscopic world, thermodynamics plays a key role. For example, entropy. What differentiates the two types of time is quantum mechanics.
At this point if you are not as confused as I am about the meaning of time, then you are ready for lectures in general relativity, the Higgs boson, and the God particle.
MamaMoose