In this World Cup, the octopus "Paul" only predicted the German game, and won five consecutive victories. It turns out that octopus prediction is a trick played by Germans. Some people may ask why other countries don't use octopus to predict the victory or defeat of their own teams. The answer is that the color of the German flag is exactly the color of octopus's favorite food.

Stable structural myoglobin is a necessary condition for octopus to survive in the deep sea. Octopus is keen on eating crustaceans such as shrimp and crab because of astaxanthin. Astaxanthin is the strongest antioxidant and a necessary condition to ensure the structural stability of myoglobin without oxidation. Shrimp and crab are rich in astaxanthin, and the red substance of ripe shrimp and crab is astaxanthin. Therefore, the rule of the game is that there must be these foods in the container covering the national flag to attract octopus to climb in.

The German flag is black, red and yellow, which is the favorite food color of octopus, and it is clearly two prawns hiding in the dark. He must prefer to attack such a target. Australia's flag is dark blue+red rice. Octopus thinks the food is too small to choose, so Australia loses. The flag of Serbia has not only a red shrimp, but also a red crab. Octopus thinks it is more attractive, so Germany was not chosen, and Germany lost. It stands to reason that Ghana's national flag is similar to that of Germany, but it is precisely because of that five-star that the octopus thinks there are impurities or dangers, and instead chooses Germany, so Ghana loses to Germany. What about England? An eye-catching red cross was offensive to octopus, but it prompted octopus to choose Germany, and England was defeated. It's Argentina's turn, and there is no color that attracts octopus, and the defeat is inevitable.

Yesterday, before "Paul" predicted, some people analyzed that Germany had no chance against Spain in the semi-final. Because the flag of Spain is three prawns and a crab. As a result, Squidward Tentacles did choose Spain.

In the vast nature, almost all mollusks are color blind, and most of their eyes have degenerated. Octopus is obviously not color blind.

Octopus is rich in cone cells and rod cells, which can distinguish colors sharply. Octopus's eyes are very similar to those of vertebrates, including cornea, lens, iris and retina, which can be focused and imaged. However, it is different from vertebrate eyes because it focuses light by adjusting the distance between the lens and retina, while vertebrates focus light by changing the size of the lens. Octopus can recognize shapes, shades of colors and textures of objects. Another difference is that octopus's eyes have no blind spots, and its nerve cells are outside the eyeball.