the String Theory

This is an old dilemma, on one side we strive for understanding ever more and we dream with finding a theory of everything, but if we did ever find it, would might that imply? would 'the future unfold in front of our eyes'?, would there still be randomness and unpredictability preventing us from knowing the future?, would it affect our freewill? would the motivation of knowing and understanding fade away, as if 'there's nothing more for us to do'? In a certain sense, while we search for it, we hope to never find it, for the consequences might be scary.

As for the video, honestly I don't hear anything that scientists are not aware of, he's just blablabla trying to sound transcendental, nothing of what the guy says should be any reason for being anti-scientific.

Might be, but then again I think one could doubt to what point this is still 'understanding' and where it turns into 'believing'. For example, many religious people think their religion already explains all there is to know about the universe. In that case, you might be 'done' by taking on a religion.

That may well be right, but it should not stop us from trying. Just trying is a very rewarding exercise, we have made decent progress so far so we must certainly keep trying.

I am actually cautiously respectful of John Wheeler's philosophy which roughly states that the 'purpose of life' is to understand (or rather, 'to make real' or 'make happen') the universe ('the participatory universe principle'), or those who propose that 'consciousness' eventually will evolve to encompass all the knowledge required to understand the universe, effectively making a loop where 'understanding' or 'awareness' and 'physical reality' are just two sides of the same coin.

Well, that was quite the original hope, and if proved true (even if only meaning 'mathematically consistent complete theory') it would have provided a very powerful unifying principle and a conceptually attractive explanation for why do we see so many different 'elementary' particles and forces in the Standard Model (plus hopefully also the ones we do not really know such as dark matter).

Pity is, that after years of work the dream of such great underlying simplicity did not hold up. It became clear that 'vibrating strings' could not explain the whole edifice and other concepts needed to be gradually added, first closed loop strings, then, 2-branes, D-branes, p-branes... Of course the theory may still be right but the edifice being assembled in String Theory is again so complex that the initial motivation of conceptual simplicity has been lost. The main problem in String Theory though, is that it seems to allow a potentially infinite diversity of possible universes and offers no clue as why our universe is as it is. Saying that anything is possible so consequently our universe must be one of the infinite possibilities is not a very helpful solution to our desire for understanding.