Hsin-Hao Yu's Personal Blog

As a PhD student, I took a class in animal behaviour. I didn’t work very hard and have forgotten most of it. However, since I became a father, I have been thinking more about this class. One of the papers I read was the classic “The social function of the intellect” by Nicholas Humphrey, first published in 1976. The paper is packed with insightful analogies. For example, Humphrey offered an interesting interpretation of Robinson Crusoe. According to him, Crusoe’s life on the island was a relatively simple and easy one, which he managed without too much trouble. His life only became challenging after the arrival of Friday.

What is the shutter speed of human vision? A new paper claims that at extremely low light condition, it can be as long as 0.6 second.

What was the first time that we know that non-human animals have color vision? From what I can find, the first person who scientifically came to that conclusion was John Lubbock in 1888. What was so strange about it was that he studied Daphnia - a plankton (!). He discovered that the plankton was attracted to yellow light, but not to white light. Lubbock also reasoned that insects must have color vision, but was not able to scientifically demonstrate it. It was decades after Lubbock published his book, in 1914, that Karl von Frisch established the behaviour training method for testing color vision.