I agree with other reviews on imdb that the movie has missed its mark by trying to bridge art and physics while not having a clear narrative vision. Artists will say outrageous and disconnected stuff, and that is perfectly fine in a film that focuses on the art, as their role in society is to attribute a cetrain magical spirit to what could otherwise be seen as pure math. Its a special skill. However they are placed in a situation where the narrative they are building is in stark contrast with the reality of physics which makes them feel out of place and detached from reality. The scientists are also put in a bad position, being asked to explain one of the most fascinating concepts around us, to folks who do not really listen, and instead nod their heads in confirmation and then attribute it to magic. Ar which point you can see the scientists give up and simply shield the artists by nodding their heads "yes we dont know where the light goes when it hits a black surface, perhaps it is magic". Bear with me - the film is actually good. It presents a fascinatingly wide spectrum of artistic work and instalations that deal with light, and showcases just how fluid light as an medium is and how important it is to human perception of the world. It rings back to anything from Olafur Eliassons work in participatory spaces curated with light to Kapoors vantablack, Klein blue as surface mediums, to the anthropological and animistic view of light. It makes you think. It does this well. But then, from time to time, it wakes you up from deep thought, by trying to up the stakes by forcing an interaction in segmented and unstructured conversation with the science behind light, which results in silly statements being hilighted into being cringe. If you can swallow that, the movie is excellent.