yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

Watch: How Animals and People See the World Differently | National Geographic


2m read
·Nov 11, 2024

[Music] What most people think of when they look at the world, they think other animals probably see the world pretty much the same way. Only with time do we realize that, of course, other animals don't see the same things we see. That takes us to a sort of a philosophical question: what is the animal actually seeing?

It's impossible to know because it goes into a brain that's very alien to ours. It goes through processes that we don't use when we process visual stimuli. The animal does things with that information that we don't do, so it's really hard to know. The most simple eyes just tell an animal when it's light and when it's dark.

Then you got eyes like ours that have color vision and very, very good spatial vision and can see very complex detail. The development of eyes can be categorized into four stages, from simple to complex. Stage one is the simplest form: light falling on just a few photo receptors allows an animal to sense light and dark.

At stage two, organisms can now tell which direction light is coming from. In stage three, two distinct eyes appear. The first is a cued eye with more photo receptors; the second is a compound eye that adds more cups. Both types in stage three can produce crude images of objects.

In stage four, the most advanced eyes perform complex visual tasks. Lenses, corneas, and irises focus light on photo receptors, creating sharp, clear vision. This entire evolution, from simple to complex, could theoretically happen in less than half a million years.

People have asked me, um, if I could be any animal at all, what animal would I like to be? In terms of their vision, it would only be right to say that since I work on them so much of my time, I would really like to know how mantis see the world. Their perception of the world is so different, both in terms of their sense of color, their sense of parts of the spectrum that we don't see at all, and also the way that their eyes are multiple, so that each eye sees the same thing multiple times from different points of view.

I think I’d probably, if I got myself into the mind of a mantis, I’d have no idea what was going on, and I would never be able to tell myself, "Oh, this is how they see." That's the thing that I'm afraid of, but I'd still like to spend at least a few minutes seeing how a mantis sees the [Music] world.

More Articles

View All
GPT-4o (Omni) math tutoring demo on Khan Academy
Hi, my name is Sal Khan. I’m the founder of Khan Academy, and I’m also the author of a new book about artificial intelligence and education called “Brave New Words.” OpenAI invited myself and my son, Imran, here to try out some of their new technology. So…
Catch of the Week -Hot Tuna's on Fire | Wicked Tuna
Oh, there’s a mark, some kind of mar right at the bottom. There could be two. All the C to home. 60 mi from GLA. Got the P here. [Music] Happy, go forward, go forward, go forward, go, go, go, go! The other way, drop that! Now you’re ready? Ready? Yep! Co…
Transformations, part 3 | Multivariable calculus | Khan Academy
So I want to give you guys just one more example of a transformation before we move on to the actual calculus of multivariable calculus. In the video on parametric surfaces, I gave you guys this function here. It’s a very complicated looking function; it’…
Edgar: crowdfunding drive
Uh, my name is Thomas, and last year I made the film “George Ought to Help.” Right now, I’m working on a follow-up called “Edgar the Exploiter.” It will be similar to George in that it will be a gentle pro-liberty propaganda piece, because George was a s…
The structures of informational texts | Reading | Khan Academy
Hello readers! Let’s talk about structure. When architects and engineers design a building, one of the considerations they have to make is structural support. How’s this thing going to stay upright? How do we make sure it doesn’t blow over in the wind or …
my Asian skincare routine for glass skin 🌈 ✨
Hi guys, it’s me Ruri! Today, I’m back with another video. Today, I’m going to show you guys my updated skincare routine. You guys really enjoyed the previous one, so I decided to create another one. So, let’s get started! Even though I’m not wearing mak…