He set out to walk around the world. After 27 years, his quest is nearly over

That depends on your values. I think it's bureaucratic BS in every country. The world hasn't been like this forever, and still isn't like this for other animals.

That would be amazing if some country tried to enforce visa rules on animals.

They do actually, for example with swine in Denmark. They've built fences for that purpose specifically.

If you enter a bear's den, especially if it has cubs, the bear will likely attack you.

If you enter the territory of a swan, especially during nesting season, the swan might attack you.

If a foreign object enters some animal's body, the immune system may attack that object.[0] Allergy might be related to the immune system misidentifying allergens.

Squirrels can be surprisingly territorial.

Ants have wars. [1]

This is not surprising, since the consequences of territory being compromised can be severe. For instance, in this case [2], the territory was compromised through deception, like pretending to be one of them, and it led to the severe weakening or death of the whole colony through the mass devouring of their offspring.

[0]: https://en.wikipedia.org/wiki/Foreign_body_reaction

[1]: https://en.wikipedia.org/wiki/War_in_ants

[2]: https://www.reddit.com/r/Damnthatsinteresting/comments/123ke...

Humans and animals enforce their borders since millennia.

The idea that borders are unimportant is very very recent. That is to say, its commie gobbledygook.

I am not convinced that the idea is recent, or rather, related ideas are not recent, going back thousands of years. It can be extremely complex, to put it very mildly. How well people that put their trust in some of those ideas fare, can likewise be an extremely complex topic, and can also be political. In some cases in some ways some of them might have fared well, in some other cases in some ways, maybe less so.

So you’re saying we are no better than animals, and shouldn’t aspire to be?

Right, well we know which side of the enclosure of the commons you for some unaccountable reason assume you’d have born in.

Why do you think it's a communist thing? Communist countries (both historically and current) tend to protect their borders fervently.

I'd say no-border cosmopolitanism is more of a classic liberalism thing.

We are animals, we shouldn't try to avoid that as if its a bad thing.

It was clearly a response to the grandparent's "... isn't like this for other animals". It's a fine thing to aspire to be better, but we just shouldn't be claiming that human behavior is any way less natural than that of all other animals.

In practice, communist countries have always put a lot of effort into keeping their citizens in.

You can also consider the subject in terms of IT. Firewalls can be argued to delimit territory, as can login systems. Sandboxes are probably the reverse, in terms of keeping something in instead of keeping it out.

Some cells have cell walls, and viruses as I understand it have to penetrate that wall.

Nuts and fruit sometimes have protective shells.

An argument could be made that borders and territory are fundamental.

For an agent that seeks to defeat border control mechanisms, it can potentially be effective to convince the target parties that border control mechanisms generally or specifically are harmful, are useless, or have drawbacks. This is not always completely false in all cases, for instance regarding immune systems misidentifying harmless allergens as harmful, causing potentially significant harm as allergy. However, if an agent uses such approaches, they have to be careful not to buy into that idea themselves, lest matters may become strange and weird. And, in the modern day, if an agent is especially successful and competent with defeating border control mechanisms, considering the extreme power that the human species holds these days, such as with nuclear weapons, it puts an extreme responsibility on such successful agents, at least in the current systems. Otherwise, the consequences might be extremely detrimental to the human species as a whole.

Please define "better" in this context.

One definition of "better" could be to seek to avoid the extinction of the human species and of civilization. With that definition, in the current situation, taking measures to help avoid nuclear weapon usage, could be considered in depth and genuinely "better".

One must distinguish between "classical" communism (Stalinism, which is dead except in North Korea) and the modern variety, which is alive and well and I think is what you mean.

There are many that think themselves "cosmopolitan", when it is a delusion and coping mechanism about being a parochial hicklib. A chip on their shoulder that makes them especially fervent acolytes of liberalism (as in: Obama flavoured, not the other kind), hoping it offsets their humble origins after moving to the big city, so folks won't get the idea that they are flyover country chuds that vote the wrong way.

A cosmopolitan, as in one that truly knows the different cultures and people of the world because he has deep first hand experience, or has read so much that it allows to draw some independent form of conclusion, is either a strong proponent of borders or a fool.

The core tenet that makes this communism-adjacent is the denial of differences: everyone is equal, "no one is illegal" etc pp. Ignorance of history and the nature of man is a must to take this position.

A group of men crossing the border into another country was (usually) automatically considered invaders if its size exceeded a certain number.

Eg Iberian Peninsula (Reconquista and later): Foreign parties >10 armed men could not cross without permission between christians and muslims.

Chinese frontier zones, Scythians, Huns, Mongols, Turks etc all had similar rules. If you want to go back further, then Assyria, Egypt, Hittites, Greece had such limits.

I agree, and one of their great concerns is keeping foreign spies from getting in. Even though Russia isn't in good graces with the world currently, I think it's I'll advised to go off-script with any nation's border checkpoints.

You are correct that there are many examples of border control mechanisms, in different levels and ways. Maybe even usually the vast majority for many levels and ways.

Some nations, countries or groups, or other levels, did play with some of those mentioned ideas of less border control mechanisms in some ways or levels, also going back thousands of years.

Countries that were not successful with border control mechanisms, sometimes ceased to exist.

But there are many different levels and ways, and the whole topic is, to put it very mildly, extremely complex.