Hacker News Reader

Not to be obtuse, but wouldn't what is basically an anthropomorphic doughnut be fine in two dimensions? Or do you just mean that that would not likely be the digestive tract of such a thing?

But you can't have a doughnut in two dimensions either, the two sides would have to be separated by the hole or else it's not really a doughnut, it's just a circle without a digestive system.

Futurama had a fun episode that dealt with this.

https://theinfosphere.org/2-D_Blacktop

Where would you place the nostrils?

Assuming we can ignore your septum and the roof of your mouth, your respiratory system is basically just an indentation in your head. From a topology perspective, it doesn't really exist. Your lungs are on the outside.

But that's the thing, you cannot ignore those parts in topology. Even if they look small compared to the rest of the body.

Sure, but you could still be a functioning human without them. You'd be a mouth breather, but you could survive.