The speaker, who introduces himself as the host of "Film Theory," discusses the movie "The Descent" and its sequel, "The Descent Part 2." He starts by explaining that the movie is about a group of friends who go on a trip in the Appalachian Mountains to explore caves. The leader of the group decides to lead the team into an unexplored section of the caves, which collapses, trapping them inside. The group eventually realizes they're being hunted by albino cave goblins, who are blind and hunt by sound. The movie becomes a frantic race in the dark winding caves to escape before everyone becomes a crawler snack.
The speaker then delves into the plausibility of the crawlers, the monsters in the movie. He explains that they aren't fantasy killers like Freddy Krueger, but they're also not very plausible monsters like the shark from Jaws. They seem like the kind of thing that would be a local legend like Bigfoot or the Blair Witch. The speaker then discusses the director's explanation of the crawlers as cavemen that didn't leave the cave and have evolved in this environment over thousands of years. They have acute hearing and smell and function perfectly in the pitch-black.
The speaker then presents a theory about the crawlers' existence, suggesting that they could exist in the real world without us knowing it. He discusses the issue of unexplored caves where the crawlers could hide and the discovery of new animal species. He also mentions the discovery of a new species of ancient human in the Philippines, which could be a candidate for what would eventually become the crawlers in "The Descent."
The speaker then discusses the crawlers' senses, particularly their blindness. He explains that it is plausible that a subspecies of human could evolve away their eyesight, especially if they live in caves. He also mentions the star-nosed mole, a blind mammal that exists in the Appalachian cave systems where the crawlers haunt in the movie.
The speaker then discusses the crawlers' food source. He suggests that the crawlers hunt above ground, particularly on deer, and then drag those kills back into the cave to feast on. This means they aren't relying solely on what's inside the cave as a food supply.
Finally, the speaker discusses the minimum viable population (MVP) for the crawlers to survive. He mentions that the most we ever see on screen at one time is 9, near the end of the movie. Anthropologists believe that cave dwelling Neanderthals only lived in groups between 10 and 30 individuals. Therefore, it's likely that the crawlers are below the MVP that they need to survive. The speaker concludes by suggesting that the crawlers are not likely to survive very long due to their blindness, deafness, and inability to smell their prey.
Here are some possible key facts extracted from the text:
1. The Descent is a horror movie about a group of friends who get trapped in a cave and hunted by blind albino creatures called crawlers.
2. The director of the movie, Neil Marshall, said that the crawlers are cavemen that didn't leave the cave and evolved in the dark over thousands of years.
3. The movie was followed by a sequel, The Descent Part 2, which was poorly received by critics and fans.
4. The theory of the video is to examine whether the crawlers could actually exist in the real world, based on unexplored caves, new animal species, sensory evolution and minimum viable population.
5. The video concludes that the crawlers are unlikely to exist, because they would suffer from inbreeding and hearing loss, which would make them unable to hunt and survive.