Literally I cried sometimes, laughed sometimes, felt sorrow, regret, hate, and all of this just from reading novels, manhwa, manga, or other comics and stories but do you know why we feel emotions from the pile of texts? Because just imagine our brain is not able to decipher what is real, what is fiction ?
There is no guarantee that the person who we love will be us together or maybe some accident happened, some event happened and because of that you can't be with that person so why do you love when there is too much risk? I am immature in this field of video so I want all your suggestions and your thinking on this one.
There is no guarantee that the person who we love will be us together or maybe some accident happened, some event happened and because of that you can't be with that person so why do you love when there is too much risk? I am immature in this field of video so I want all your suggestions and your thinking on this one.
We often think a civilization collapses because of one war, one king, one bad decision, or one incident. But after reading about it, I don't think that's how it works anymore.
From what I understood, a civilization usually collapses after a long cycle. There are mainly 3 things happening together.
First, when society becomes stable and safe, the population grows. More people means cheaper labor, while day-to-day expenses keep increasing because businesses always want higher profits. Wages stay almost the same, so poverty slowly grows.
Second, as businessmen, industrialists, and elites accumulate more wealth, they also want higher positions for themselves and their children. But those positions are limited. Imagine musical chairs. There are only 8 chairs but around 40 capable and educated people. That naturally creates competition and conflict among the elite themselves.
Third, the government slowly becomes weaker. It has to keep both the rich and the general population happy at the same time. The rich control most of the wealth, while the government keeps spending money on public services. At the same time, tax collection becomes weaker because the richest people often avoid paying as much as they should. Eventually the lower class is frustrated because life becomes difficult, the elite are fighting each other for power, and the government keeps getting weaker.
The part that fascinated me was this. We usually blame the final spark that caused the collapse. But the spark is not the real reason. The real reason is the dry wood that kept piling up for decades. The spark only makes the hidden problem visible.
It also made me think about our brain. If today is mostly normal, the brain assumes tomorrow will also be normal. It updates little by little instead of noticing slow changes happening over decades. Maybe that's why societies don't realize what's happening until the damage is already too large.
So now I have one question. If this same pattern has repeated across so many civilizations, are we also somewhere on that same path today?
Note: I just started learning about this topic, so I might have misunderstood or oversimplified some parts. If I got something wrong, please correct me. I genuinely want to learn, not defend my opinion.
We often think a civilization collapses because of one war, one king, one bad decision, or one incident. But after reading about it, I don't think that's how it works anymore.
From what I understood, a civilization usually collapses after a long cycle. There are mainly 3 things happening together.
First, when society becomes stable and safe, the population grows. More people means cheaper labor, while day-to-day expenses keep increasing because businesses always want higher profits. Wages stay almost the same, so poverty slowly grows.
Second, as businessmen, industrialists, and elites accumulate more wealth, they also want higher positions for themselves and their children. But those positions are limited. Imagine musical chairs. There are only 8 chairs but around 40 capable and educated people. That naturally creates competition and conflict among the elite themselves.
Third, the government slowly becomes weaker. It has to keep both the rich and the general population happy at the same time. The rich control most of the wealth, while the government keeps spending money on public services. At the same time, tax collection becomes weaker because the richest people often avoid paying as much as they should. Eventually the lower class is frustrated because life becomes difficult, the elite are fighting each other for power, and the government keeps getting weaker.
The part that fascinated me was this. We usually blame the final spark that caused the collapse. But the spark is not the real reason. The real reason is the dry wood that kept piling up for decades. The spark only makes the hidden problem visible.
It also made me think about our brain. If today is mostly normal, the brain assumes tomorrow will also be normal. It updates little by little instead of noticing slow changes happening over decades. Maybe that's why societies don't realize what's happening until the damage is already too large.
So now I have one question. If this same pattern has repeated across so many civilizations, are we also somewhere on that same path today?
Note: I just started learning about this topic, so I might have misunderstood or oversimplified some parts. If I got something wrong, please correct me. I genuinely want to learn, not defend my opinion.
So today I learned about how the brain actually constructs reality and honestly this broke something in my head. But before explaining what I learned, I want you to correct me if I am wrong.
We all assume that our eyes see something, that information goes to the brain, and the brain processes it and responds. That's the obvious model. That's completely wrong.
Here's what's actually happening. For every 1 signal your sensory organs send to your brain, your brain sends 10 signals back down. The brain is not receiving the world. It is constantly generating a prediction of what the world looks like right now, and only using sensory input to check whether its prediction was right or wrong.
What you are experiencing as reality is mostly your brain's prediction. The sensory data is just a correction signal.
This is why you can look directly at something and not see it. Your brain already predicted the scene without that object in it. The sensory signal from that object arrives but the brain's existing prediction is too confident to update. So it disappears even though it is right in front of your eyes. This is a documented phenomenon and it happens to everyone constantly.
Now here is where it gets stranger.
When you sleep and your eyes close, the sensory correction signal disappears. The brain keeps generating its world model but now there is nothing checking whether that model matches reality. That is a dream. That is why dreams feel completely real. The same machinery that constructs waking reality is running, just without anything to correct it.
Waking life is a controlled hallucination. Sleep is an uncontrolled one. The difference is only how much sensory correction is happening.
Then the identity question hit me.
We feel like there is a self sitting somewhere behind our eyes watching all of this. There is no such thing. What we call the self is the brain's construction built from three things: memory of who we have been, emotion, and a sense of owning this body. When these three combine, the feeling of being a unified me appears. But it is assembled, not given.
And then the decision thing. Before you consciously feel like you are deciding something, your brain has already initiated the action. The feeling of choosing arrives after the choice has already been made underneath. The experience of being the one who decides is real. Whether you are the cause of the decision is a completely different and genuinely unsolved question.
So here is where I landed.
The observable universe is 93 billion light years across and we exist for one second of its entire history. And today's topic says the experience of existing, every moment of seeing and feeling and deciding, is something the brain is generating rather than receiving.
We are not watching reality. We are constructing it. And the constructor has no single location, no permanent self, and starts decisions before the conscious mind knows about them.
Who is actually here?
Nobody has fully answered that yet.
So today I learned about how the brain actually constructs reality and honestly this broke something in my head. But before explaining what I learned, I want you to correct me if I am wrong.
We all assume that our eyes see something, that information goes to the brain, and the brain processes it and responds. That's the obvious model. That's completely wrong.
Here's what's actually happening. For every 1 signal your sensory organs send to your brain, your brain sends 10 signals back down. The brain is not receiving the world. It is constantly generating a prediction of what the world looks like right now, and only using sensory input to check whether its prediction was right or wrong.
What you are experiencing as reality is mostly your brain's prediction. The sensory data is just a correction signal.
This is why you can look directly at something and not see it. Your brain already predicted the scene without that object in it. The sensory signal from that object arrives but the brain's existing prediction is too confident to update. So it disappears even though it is right in front of your eyes. This is a documented phenomenon and it happens to everyone constantly.
Now here is where it gets stranger.
When you sleep and your eyes close, the sensory correction signal disappears. The brain keeps generating its world model but now there is nothing checking whether that model matches reality. That is a dream. That is why dreams feel completely real. The same machinery that constructs waking reality is running, just without anything to correct it.
Waking life is a controlled hallucination. Sleep is an uncontrolled one. The difference is only how much sensory correction is happening.
Then the identity question hit me.
We feel like there is a self sitting somewhere behind our eyes watching all of this. There is no such thing. What we call the self is the brain's construction built from three things: memory of who we have been, emotion, and a sense of owning this body. When these three combine, the feeling of being a unified me appears. But it is assembled, not given.
And then the decision thing. Before you consciously feel like you are deciding something, your brain has already initiated the action. The feeling of choosing arrives after the choice has already been made underneath. The experience of being the one who decides is real. Whether you are the cause of the decision is a completely different and genuinely unsolved question.
So here is where I landed.
The observable universe is 93 billion light years across and we exist for one second of its entire history. And today's topic says the experience of existing, every moment of seeing and feeling and deciding, is something the brain is generating rather than receiving.
We are not watching reality. We are constructing it. And the constructor has no single location, no permanent self, and starts decisions before the conscious mind knows about them.
Who is actually here?
Nobody has fully answered that yet.
So I just learned about astrophysics today and I have to share this because my mind is completely blown and I cannot stop thinking about it.
Let's start from the very beginning.
13.8 billion years ago the universe did not exist. There was no space, no time, nothing. And then something happened, a Big Bang, and everything started. Now 13.8 billion years is a number that our brain simply cannot feel, so let me make it feel real.
Imagine compressing 13.8 billion years into one single year, January to December. In this cosmic calendar, Earth does not form until September. Human civilization, all of our history, every war, every empire, every person who ever lived, gets compressed into the last one second of December 31st at 11:59 pm. That is how long we have been here compared to everything else.
Now here is the part that genuinely shook me.
In the early universe the temperature was so high that even atoms could not form. Electrons and protons were just flying separately everywhere and because of that light could not even travel, it kept getting blocked. Only after things cooled down enough did atoms start forming, and only then did light get its first chance to actually move through space. That light from that moment is still traveling and we can still detect it today.
Then dark matter, which is invisible because it has no interaction with light at all, only gravity, started pulling hydrogen gas clouds together. That gas got compressed from outside by gravitational force and started pushing back from inside. When that pressure got extreme enough, two hydrogen atoms fused into helium and released energy. That is a star. That is literally how every star in the universe is born.
And when a star runs out of fuel it keeps fusing heavier and heavier elements, all the way up to iron. Iron is where it stops because iron does not release energy when it fuses, it actually consumes energy. The moment a star starts making iron its internal pressure starts dying. The outside gravitational force wins. The star collapses inward and then explodes outward in a supernova so bright it outshines every other star in its entire galaxy for a moment.
That explosion scatters everything into space. Iron. Carbon. All of it flying outward.
The iron running in your blood right now came from a star that exploded before Earth even existed. You are literally made of a dead star.
Now about black holes. If the core left behind after a supernova is heavy enough, gravity wins completely. It compresses so hard that not even light can escape because gravity curves spacetime itself to the point where there is no way out. That is a black hole.
And the scale of all of this is genuinely hard to hold in your head. The observable universe is around 93 billion light years across. Inside that there are billions of galaxies each with trillions of stars and more planets than every grain of sand on every beach and ocean shore on Earth combined. That is how many worlds exist just in the part of the universe we can see.
Which brings me to the two questions I cannot stop thinking about.
We are one civilization on one planet out of more planets than grains of sand. Even if only 0.000001 percent of those planets had life, that number is still enormous. So where is everyone? Why has nothing ever reached us? Did they destroy themselves before they could? Are they out there right now and we just cannot see them yet? Or are we actually alone in all of this?
And the second one. What is on the other side of a black hole? Some theories suggest that a black hole could be the beginning of an entirely new universe, like a new Big Bang happening inside it. If that is true then our universe could itself be sitting inside a black hole in some larger universe. And every black hole in our universe could contain its own universe inside it. Universes inside universes with no end.
Nobody has the answer to either of these questions yet.
And I think that is the most beautiful and terrifying thing I have learned so far.
Our brain does not always think in a fully rational way. It works through two systems. System 1 is fast, automatic, and cheap. System 2 is slower, more careful, and rational, but it needs more energy. Because of that, the brain usually prefers System 1 and takes the easiest path if it can. It is not exactly laziness, more like energy saving.
That is why a discount on Flipkart or Amazon works so well. A product has one price, then the old price is crossed out with a red line, and the final price looks lower. Even if we do not really need the product, the brain feels like it is a gain and wants to buy it. On the other hand, we can fight over ₹10 with a local vendor because the same amount feels very different in a different situation. The brain is not comparing properly all the time. It is reacting to the frame.
This also connects to loss aversion. Losing something hurts more than gaining the same thing feels good. So losing ₹500 hurts more than getting ₹500 feels good. That is also one reason people stay in toxic or uncomfortable relationships. Leaving feels like a bigger loss than the possible gain of moving on, so the brain stays stuck even when the situation is bad.
What makes this topic interesting is that it does not mean the brain is broken. It is just trying to use less energy. System 2 is there, but it does not run all the time because it is expensive. So a lot of the time, people are not making decisions by deep calculation. They are making decisions through shortcuts, frames, and quick reactions.
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Network theory is interesting because success is not only about hard work or skill, it is also about position. A node is a point in the network. A hub is a node with a lot more connections than average. That difference matters because not every connection has the same value. A person can only keep around 150 close relationships, so even if a celebrity has millions of followers, that does not mean millions of real close connections. Social media often makes a few extreme examples look normal, but those people are usually outliers, not the average case. Many people see reels on social media about the glamorous life of someone and think that they are the only ones who are lacking in their life and think that they are bad. That's not the case because they are seeing an iPhone in a mountain of scraps. That's the misconception that leads these days.
What makes this topic even more useful is that weak connections matter a lot. Strong connections are deep and familiar, but weak connections are often where new information, new opportunities, and new ideas enter. That is why touching multiple domains can help. When different clusters connect, something new can emerge. A bridge between two separate groups can sometimes create more value than staying inside one crowded group.
A simple example is two islands. One island has one million merchants and traders. The second island has five hundred thousand farmers. Neither island knows the other exists. If someone builds a bridge between them, that bridge suddenly becomes extremely valuable because it connects two dense clusters that were completely disconnected before. The value is not coming from being the biggest merchant or the biggest farmer. The value comes from being the connection between them.
This is also why a new player can still win even when a giant already exists. Before Google, Yahoo was already a giant in search. If people assumed that search was already occupied and there was no room left, then Google would never have existed. The point is not that giants can be beaten easily. The point is that network position, trust, and the way connections flow can create opportunities even in crowded fields. Hard work matters, but in a crowded field, position inside the network can matter just as much. If someone can find a bridge that nobody else sees, they can create an advantage that looks unfair from the outside.
So whenever anything spreads, whether it is a disease or a Reddit post or a rumor or a product, there is one number that controls everything. That number is R0. It just means how many new people one person can spread it to on average. That is it.
If R0 is more than 1, means one person is spreading it to more than one person, then it keeps multiplying and at some point it suddenly explodes. The weird thing is it looks like nothing is happening at first. The early phase looks slow and boring. But it was always multiplying, just in small numbers that feel invisible. And then suddenly it is everywhere.
If R0 is less than 1, means one person spreads it to less than one person, then it slowly dies on its own. Nobody has to stop it. Each round of spreading has fewer people than the last one so it just fades out.
The most interesting thing is that R0 of 0.9 and R0 of 1.1 look almost the same from outside. But one dies and one explodes. That small difference between them changes everything.
Now the average problem. If you take the average of how much everyone spreads something, that number is kind of useless. Because in reality a few specific people or accounts have so many connections that they spread around 80 percent of the total thing. Everyone else combined spreads only the remaining 20 percent. So the average hides what is actually happening. The real question is never what the average person does. It is what the most connected people do.
This is why some things suddenly go viral. It is not because everyone started sharing at the same time. It is because one or two highly connected people touched it and it jumped.
**Note****: I try my best to explain things and if I am wrong anywhere, I want you to correct me .**
I learned evolution and natural selection, and what I got from it is that life does not move with a plan or a fixed goal. Things change because there is variation, and then the environment keeps what works better and removes what does not. It is not about perfect design or the strongest one always winning. It is just that whatever fits the situation more gets carried forward again and again, and after many generations, that small filtering becomes a big change. That is why evolution can make things look intelligent or designed even when there was no designer behind it.
This also made me think that evolution is not only about animals or plants. It also helps explain humans, because our survival instinct, competition, cooperation, emotions, attraction, and even some parts of how we behave in groups can be seen through the same lens. A lot of what survives is not the best in some absolute sense, but what survives in that specific environment. Even language and ideas can work in a similar way, because the things that are useful spread and the things that are not useful slowly disappear.
For example, imagine 10 red marbles and 10 blue marbles in a jar. If random picking keeps selecting more blue marbles and less red marbles again and again, then over many rounds the red marbles will become fewer and fewer, and finally they can disappear. That is how selection works over time. Not because the red marbles are bad, but because the situation kept favoring the other side again and again.
And the burger example makes it even easier to see. Hundreds of food trucks are selling burgers, then one truck randomly makes its burger spicy. Winter comes, people start liking that spicy taste more, and everyone begins lining up there. Slowly the other trucks close, that one truck opens more branches, and after some time the city itself starts having spicier burgers because that version spread more. That is basically evolution in a simple way. Not a plan. Just whatever keeps fitting the situation better keeps surviving.
I am Indian, and my mother tongue is Hindi. English is not my mother tongue, but I use it in school, for study, and for more formal things. So when I read about linguistic relativity and code-switching, I started thinking about how language may shape thought and emotion.
What I understood is that language is not only for expressing what we already think.
It also affects how we notice things, how we interpret them, and how we feel them. In my case, Hindi feels more connected to emotion, comfort, and familiarity. English feels more connected to structure, formality, and discipline. That is why I think the same situation can feel slightly different depending on which language I am using.
I also think this may be why people who know more than one language switch between them naturally. Sometimes the brain just picks the language that gives the right word or the right emotional tone. It does not always feel like a mistake.
One thing I am still thinking about is this:if a person had no language at all, could they still think?My guess is yes, but not in the same way. They could probably still feel, recognize, and visualize things. But abstract thinking would probably be much harder without language.
Note: I am not saying I understood everything perfectly. This is just what I read and what I got from it. What do you think is right here, what is wrong, and can a person think without language?