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Now Dennis, I hear speed has something to do with it.

It’s too hard to try to manually control a fast breath rate like that. What you want to do is to naturally push that up by doing a bunch of physical work so that you’re breathing heavily. Then you’ll be exhaling lots of carbon dioxide!

The problem is that population distribution means that almost nobody is going to be getting on or off the train between Minneapolis and Seattle. The population of North Dakota is 800k, South Dakota is 925k, Nebraska is 2 million, Montana is 1.1 million, Wyoming is 590k, Idaho is 2 million. That’s nearly a whole quadrant of the country with less population than the Houston metro area. If we’re building trains, let’s build trains in Houston and serve the same number of people with like a tiny percentage of track that it would take to serve the upper plains states.

In theory we can break down the sense of sight into subcomponents, too. It’s only the visual cortex that processes those raw inputs into a coherent single perception. We have two eyes but generally only perceive one image, even if the stereoscopic vision gives us a good estimate of distance, and one eye being closed or obscured or blinded fails pretty gracefully into still perceiving a single image.

We have better low light sensitivity in our color-blind rods but only have color perception from our cones, and only in the center of our visual field, but we don’t actually perceive the loss of color in those situations.

So yeah, someone putting a warm hand on my back might technically set off different nerve sensors for both temperature and touch, but we generally perceive it as a unified “touch” perception.

Similarly, manipulating vision and sound might very well throw off one’s proprioception, because it’s all integrated in how it’s perceived.

Nero

The dude who fiddled as Rome burned?

It’s interesting because it’s very obvious, biologically, that the panda has a digestive system that has a carnivore past, and yet, the very plentiful biomass in bamboo forests just waiting to be eaten rewards the animals that can make use of it. So the giant panda may or may not be “optimized” for meat, but has generations that came out of the free food that is bamboo, so that their very survival depends on a herbivore diet.

I remember reading that the common ancestors of all birds was carnivorous. Basically every herbivore bird descended from carnivores.

See also the giant panda and the red panda.

someone who knew the male in this meme

How can you tell that the Parapropalaehoplophorus septentrionalis is male?