Have you ever heard of biomimetics? It's a field that develops new technologies by leveraging the structures and characteristics of all living organisms on Earth.
It is a compound word of the words 'bio' and 'mimetics', and it refers to imitating and utilizing scientific principles that have evolved through trial and error in natural life over a long period of time.
After all, airplanes are modeled after bird wings.
Many novel products are being developed, such as self-cleaning fabrics that utilize the principle of lotus leaves rolling water droplets, and painless skin-piercing needles using mosquito proboscises.

--- p.57

Many people probably think of elephants as the strongest animal.
The true power lies in the sea.
It's a blue whale.
It is also called the blue whale, and its English name is 'Blue Whale' because of the blue color of its body.
It is so large that a specimen measuring as much as 33 meters in length has been discovered.
It is believed to be the largest species of animal that has ever existed on Earth, including dinosaurs.
It is truly amazing that a newborn calf can grow to be 7 meters long and weigh 2.5 tons, and gain 100 kg per day during its growth period.
It's difficult to accurately measure the strength of a blue whale, but it's no match for an elephant on land.
An elephant weighs about 2 tons on average, but a blue whale's tongue alone weighs 4 tons.

--- p91~92

Have you ever heard the term "other-handed"? It's a term used to describe someone who is more skilled at certain tasks, as opposed to being ambidextrous.
An ambidextrous person is someone who can write with equal skill with both hands, while an ambidextrous person is someone who writes with their left hand but eats with their right hand.
What this means is that although people are born with a hand they are more likely to use, they can learn to use both hands freely as much as they want later on through training.

--- p.132

There is a representative study conducted on taxi drivers in London, England.
London is famous for its very complex city center.
They say that to get a real London taxi license, you have to memorize every alleyway within a 10km radius of central London and memorize every nook and cranny of the city.
And while driving a taxi, you have to find shortcuts to destinations that are irregularly determined depending on the passenger, and to do this, you have to constantly and quickly process information in your head about how the complex alleys are connected to each other.
A research team led by Professor Eleanor Maguire of University College London analyzed their brains using MRI (magnetic resonance imaging).
Despite being a group with a considerable age range, the hippocampus, the part of the brain responsible for spatial memory, was well developed.
Professor Eleanor Maguire says, “The human brain continues to change as we acquire new skills and knowledge, even after we reach adulthood.”

--- p.161

What would happen in Earth's sky would be a black hole, a large black hole, and in the opposite direction a brightly shining disk, as if there were a sun.
Astronomers call this a pseudo sun created by a black hole.
One interesting thought that comes to mind here is that if there were a planet around a black hole, it might seem like a terrible environment for life, but if it were located far enough away, it could receive light from a fake sun created by the distorted spacetime of the black hole, maintaining a suitable temperature like Earth, and support life.
In the movie Interstellar, there is a planet around a black hole where the main character lands.
The interesting premise that real people could live there is not scientifically impossible either.

--- p.221~222

Many people underestimate the influence of pseudoscience like physiognomy.
If you repeatedly tell your young child something like, “You have this kind of face, so you would be suited for this kind of job,” you could end up forming some really absurd subconscious thoughts in the child.
I'm not that tall.
If you've been told repeatedly since childhood that "only tall people can become CEOs of big companies," you'll likely lose the desire to start a business and become an entrepreneur.
The MBTI personality analysis, which is so indiscriminately popular these days, also carries the same risk.
Many psychologists point out that MBTI analysis has limitations in oversimplifying a person's complex and multifaceted personality.

--- p.295