Why do some people say that this dress is black and blue, but it is obviously platinum? Is color really intrinsic or ridiculous?

If you see "blue+black", it proves that the cone cells in your retina have high color perception ability.

Judging from the photos alone, this skirt can be platinum or black and blue. It can even be blue-brown, blue-gold and so on. The controversy is great because people will think that this photo can be taken anyway. The only difference is that the light environment in their minds is different. The Platinum Party thinks that the scene is backlit, and the white is blue, but the shadow is dyed blue by ambient light.

I hope that through this experiment, we can understand how we seek the light environment in our minds and have a better understanding of the "opposing camp". It's really not that the other person is color blind or rod cells are not working well. In reality, this skirt may be blue and black, but the white balance is not very good when taking pictures, it is yellow. My experiment is not to simulate this failed photography, but to try to "visualize" the process of the human brain recognizing the color and light environment of this ambiguous photo.