I have just watched the show again. Most of the information covered is widely available in the public domain and the basic ideas are known to those with a passing interest. What the show did do well was interview a number of people who are leaders in their area of knowledge.
As mentioned during the show, some of the ideas discussed are little more than speculation. I doubt that I will ever fully understand the physics behind them.
Personally, the most unpalatable idea is that we are all part some superior alien's virtual reality simulation.
These programs always touch on the subject of initial origins. The whole topic is a minefield of opinions. At any point in history (up to and including the present), nobody can say with any certainty that they know the truth behind
Life, the Universe and Everything.