How much do I want to read more? 6/10

I didn't expect the beginning to be so easy to go into, and so fascinating.
However, the continuation was not so interesesting, it feels just like reading a scholar book.
I'm not sure what to expect from the rest of the book, maybe a mix of good insights and boring stuff.
"most of what you see is made up by your brain."
"A carefully orchestred hallucination of reality: close your left eyes and look hard to the left. You'll see a large blurry object, this is your nose. It is always in your field of vision, so why don't you see it all the time? It is because your brain has decided it is not important information."
"What you see is largely a fabrication of your mind. What we are consciously aware diverge from reality."

It's like Photoshop or Lightroom are running inside our brain to make some live modification with what we perceive. And that's probably why it's so easy to make our brain believe something is true even if it's not (through visualization and repetition). It's also why our dreams can appear so real.


What's going on inside your head?
If you're listening to this, congratulations, you're the pride owner of the most complex information processing device in the known universe.

This biological super computer comes equiped with all sorts of features, from consciousness and memory, to intelligence and creativity. But also with many bugs and weaknesses. It doesn't come with a manual, you just plug and play. As a result, most of us don't properly understand how our brain works and what they're truly capable of.

Your brain is like an iceberg. Think of the tip as your conscious awareness, and the rest as your unconscious.
Example, most of what you see is made up by your brain. A carefully orchestred hallucination of reality: close your left eyes and look hard to the left. You'll see a large blurry object, this is your nose. It is always in your field of vision, so why don't you see it all the time? It is because your brain has decided it is not important information. Your eyes are constantly darting around over the place, but you're not conscious of that, because your brain operates as a sophisticated software, to link these fragmented snapshots into a seemless movie.
What you see is largely a fabrication of your mind. What we are consciously aware diverge from reality.

Take your earliest memory. How easy it is to create memories of things that didn't happen.
Why don we remember virtually nothing from early childhood when so many exciting things are going on? Why do only certain events sticks into our minds?
Fascinating research show that his purpose might be to imagine the future rather than recall the past.

It is even possible that our sense of being conscious and having free will could be illusions.


1. Meet your brain


Welcome to your brain

So incredible that he barely notice its super power in action.
The brain runs at 20 watts. The computer who beat the chess master required 50 000 times more energy to work out the moves, and a sophisticated cooler system in order not to overheat.
The brain is the most confusing, complicated and arguably ugliest orgain in our all body. It produces every thought, memory, feeling, and experience of the world.
Over the course of history, it has enabled our species to build civilizations, create art, and fly to the moon.

Brains carry out a remarkable range of feats, but their fondamental purpose is really quite simple: to allow their owner to react to changes in the environment. They enable us to move away from danger. Food source. Distinguish friends from foes.
Some scientist argue that the real reasons of having a brain is not to perceive the world or to think, but to move.

some sea animals, have a simple brain, but once they permanently settle on the rock, it degenerates, and dissolve into the body. Brain is no longer needed.
In ancient time, brains wonder were not obvious to their owners. Egyptian removed it as it was not considered important in the afterlife.

We now know that the brain's immense power is derived from these grey celled are connected. A complex balley of electrical activity in the brain's network of 86 billions neurons allows us to sense our surroundings: feel, tast and remember.
The complexity of the connections betweens these cells is mindbogly. Each neuro can make contact with thousands and even tens of thousands of others. Our brain form a million of connections every second of our life. The pattern and strenght of the connection is constantly changing. And it is in this network that memories are stored, habits learned and personality shaped, by reinforcing certain pattern of brain activity and loosing others.
The memory you form while listening to this mean that you'll have a different brain from the one you started reading with.
What is personality? How does the brain process time? And the biggest mystery of all: where does consciousness arrives from?
It's possible that we'll never crack these hard problems.

Can our hopes, loves, and existence really be just the outcome of the electricity moving through a mass of grey tissu?
Descartes: the brain is made of matter, but the mind (thoughts, beliefs, mental live and memory, is immaterial), something that cannot be seen, touched or observed.

A bried history of your grey matter

How did we become the most intelligent creature on earth? From simple ape to thinking human.
Our brain is twice as big as it should be for a ape of our size.
The strong jaw muscle of primates constrains the growth of the skull. A mutation weaken this part in human line. The brain grow soon after.
The human brain equals 2 % of our body weight, but uses 20 % of our energy.

There are hints that we started to speak 600 000 years ago

The power of dreams

Until about 2 million years ago, human ancestors probably settled for a night under trees.
Better sleep are crucial for consolidating thoughts and ideas, Key process fore creative thinking.


3. Your brain through the ages

Throught life our brain undergoes more changes than any other part of the body. 5 stages:
First breath, out brain is already 8 month old, it starts to develop within 4 weeks of conception.

If you consider 86 billions brain cells in 4 major lobes from the starting point of nothing, it is a truely stagering feat of evolution re-engineering.

The benefit of talking to your bump

Language acquisition begin pre-natally. A newborn will suck more vigorously if it is his native language.
The most important factor in language development are how much a parent talk to the child after birth, the complexity of their vocabulary, and how well they focus the child's attention.