So the 20th century opened with feminist smashing store windows.

The Irish were contesting British rule.

Russians were challenging royal rule in the revolution of 1905 The French were fighting within families and across society over the plate of Jewish Colonel Alfred Dreyfus, who had been convicted of espionage on the basis of fabricated evidence.

And over the past few decades, anarchists had been assassinating heads of state and members of powerful families, including the Empress of Austria, Hungary, and we'll talk more about all those upheavals and the ways they affected 20th century Europe.

But today we want to turn to the arts and sciences and philosophical thought, all of which both shaped and were shaped by the big political and social events of the day.

We often use terms like art, history and history of science to separate out scientific and artistic pursuits from political and social history.

But if history is the story of how our species got to now, the histories of art and science and philosophy are essential to and inseparable from human history.

So music, art and dance in Europe had traditionally featured hummable and moving tunes, realistic depictions of graceful women and noblemen, and the fluttering arms of weight, like ballerinas moving ethereally across the stage.

But by 1900 all that had changed with what is now called modern classical music, modern art and modern dance.

The term modernism applies to the rejection or radical alteration of all that had come before in the arts and in thought.

Some people see modernism as a rejection of the Enlightenment ce rational approach to reality, but others believe that aspects of modernism such as abstraction, actually demand a higher level of rationality.

But for contemporary audiences and critics, those fancy ideas didn't mean much because modern music sounded just like screeching and scratching.

Song gave way in the view of critics to noise.

Even in modern dance, the ballet dancers in Rite of Spring made jerking movements and pounded the floor in so called primitive rather than graceful ways.

Ballerinas removed their two twos and ballet toe slippers and danced in bare feet and tunics.

Choreographers and performers claim to create these new movements by imitating foreign dancers seen at world fairs or in distant lands, and similarly, composers copied instrumentation and musical forms from Japan or Bali or South Asia and other regions.

Audiences literally howled and walked out of these performances in Europe, but the world of dance and music had changed forever.

As for visual art, by becoming modern, artists change their style almost yearly, or at least so it seemed, to some observers, make it new was their motto, and the Impressionists broke with realism in their paintings, First, by having human figures appear to float without a stable background and without creating exact likenesses of faces.

As you see in the paintings of Edward Manet and then Claude, Monet and his followers produced images of train stations and other urban buildings that shimmered with flex and dabs of color.

Instead of clear lines and realistic shading, they were trying to project the Japanese belief in mono known olla ray, or the fleeting nous of life, indistinct colors and lines gave The impression of nature is constantly changing appearance instead of stabilizing it in realism, which, as the Impressionists pointed out, wasn't really rial, because the riel is always changing, while realism portrays static images.

But as with the changes in music, it appeared to outsiders that artists were just losing their grip on reality and their skill.

In Minute Lee, depicting the world visual artists also increasingly focused on industrial and urban and working class life.

Instead of presenting aristocratic privilege, leisure patrons were replaced by workers in parks or women doing laundry and ironing or fatigued day laborers for the destitute German artist Kate the coal wits angered the aristocratic upper classes by emphasizing the frailty and suffering of the poor.

Instead of showing the nobility of the prosperous view, the German Kaiser called her woodcuts gutter art.

But by this time, artists were earning their lively hoods from public commissions and a new class of art dealers, not only from rich elites commissioning portrait's of themselves posing with pineapples another reminder that what artists end up painting has a lot to do with who ends up buying their paint.

Many artists only scraped by 19th century artists like Vincent van Gogh helped give us our contemporary idea of the starving and tortured artist.

But others prospered by working in commercially advantageous styles like Art Nouveau, which featured curving lines of vines and other plant life, as well as romanticized women's bodies with long flowing hair artists designed many everyday objects in the Art Nouveau style as well, from cutlery to combs and commercial artists also produced full color advertising posters for steamship lines and dance halls and cafes and theater performances and brands of soap and coffee.

And even today, posters of Art Nouveau advertisements can be found in like 1/3 of college dorm rooms.

Stan says that in his experience it's closer to 65%.

But to be fair, neither of us has been in a dorm room in like 20 years.

By the turn of the century, changes in art became even more radical, like painter Paul Cezanne depicted items like apples and oranges in geometric terms, bodily shapes and those in nature like mountains became planes and spears.

Immediately following, Pablo Picasso not only used geometric splotches to portray women but also depicted their faces as African masks.

In 1907 Swedish artist Hillman off Clint produced the first entirely abstract painting with no relationship whatsoever to realistic forms.

And most of these artists, like the earlier Impressionists, were deeply influenced by ideas and beliefs coming from the colonized world and other distant lands.

Many would argue they were also appropriating those ideas and beliefs in much the same way colonizers were extracting.

Other resource is.

But the impact of global ideas on European art was profound.

For example, off Clinton, Norwegian Edgard Monk came to capture spiritually truths as preached in theosophy, a mixture of beliefs and practices taken from Buddhist, Hindu, Islamic and other philosophical and religious traditions.

They used colors with meanings that were laid out in Theus optical teachings, and presenting these schemes correctly was supposed to be able to portray inner reality monks.

The Scream famously used line and color in ways that people believed to be emblematic of turn of the century modernism, especially the internal distress that many felt amid the faster pace and tensions of modern life.

I don't know how I feel about theosophy, but I do know that this painting looks like being on the Internet feels.

Meanwhile, in the world of science, there were similarly revolutionary ideas upending our understanding of the world.

Let's go to the thought bubble.

In 18 96 French physicist Antoine Bankroll discovered radio activity.

He also suggested that elements were changeable or mutable through the rearrangement of their atoms and then from the discoveries of Marie Curie and her husband, Pierre Curie, who found the more radioactive elements polonium and radium.

Scientists determined that atoms are not solid.

In 1900 German physicist Max Planck's quantum theory changed people's understanding of energy, although, like Galileo centuries earlier, his theories were not accepted at the time.

And amid this revolutionary scientific universe, physicist Albert Einstein announced his special theory of relativity in 1905 According to this theory, space and time are not absolute categories, but instead, very.

According to the vantage point of the Observer on Lee, the speed of light is constant.

In 1915 Einstein published his general theory of relativity, which connected the force or gravity of an object with its Mass and proposed 1/4 mathematical dimension to the universe.

And Einstein's theories of energy became critical toe all kinds of technological innovation, from the television to the nuclear bomb.

As discussed in detail in our history of science, Siri's the findings of Planck, Einstein and others really created a paradigm shift away from the Newtonian science of the early modern period, and in many ways we are still in the shadow of the tremendous discoveries at the turn of the 20th century.

Thanks.

Thought bubble.

So for a long time, scientists have made discoveries and produced theories that do not fit with our everyday interpretations of the physical world.

Right?

Did the center of the world just open their compass in there?

This is a great example of what I mean.

We still say that the sun rises in the east and sets in the west right, Because practically for us it does, even though, you know it doesn't slightly off topic.

But when I close my eyes and imagine the earth from space, I always picture north being up right, like Antarctica is at the bottom.

The North Pole is at the top.

But no.

Why so inevitably, the way we need to represent the world in an everyday way in order to know when to turn left and when to turn right is gonna skew our understanding of the world.

And during this revolutionary time, just as thinkers were trying to understand the relationship between perceived reality and objective reality, they were also trying to understand the mind and the relationship between our interior Selves and the Selves we project.

Which brings us to Freud, Sigmund Freud question the Enlightenment beliefs in a rational, self wedded to reasonable decision making and self interest.

Because you know we are not rational Selves wedded to reasonable decision making and self interest instead of a unified persona.

Freud claimed that the human cell for psyche contained three parts struggling against one another for dominance.

The ego.

The part centered on realistic activity to survive the ID or libido.

The part alive with sexual energies.

Pushing instinctual rather than rational behavior.

And the super ego, the part that acts as the conscience.

Freud developed practice of psycho analysis to treat the person in whom these three elements were out of balance enough to cause mental disturbances or neuroses.

Psycho analysis involved a talking cure in which the patient tried to call forth repressed fantasies and fears and desires so that they might be understood and cured and especially controversial.

Part of Freud's theories stated that sexual life should be evaluated scientifically without religious or moral judgments.

According to him, from infancy on, Children had sexual drives and in order for civilization to exist.

These drives, most notably in the case of Freudian psychology that drive toward incest needed to be controlled.

He also insisted that gender identity was not a straightforward entity but instead complicated and that women like men had strong sexual feelings.

They weren't passionless, as advocates of domesticity maintained.

Although many of Freud's ideas have been abandoned, the influence of psycho analysis extends to this day.

In fact, I am visiting my therapist later this afternoon.

It's now common to talk about our problems with counselors and therapists and to bring our problems out into the open instead of trying to repress thumb.

We also believe in the existence of neuroses and that ourselves are not composed entirely of rationality and intellectual activity, just like artists discarding traditional beliefs droid advanced modernism by claiming that our old ideas about the mind were outdated simultaneously.

Other theorists rejected the idea that science and facts could be used to uncover social laws.

The social sciences of sociology and economics name just two, had developed around the pursuit of identifying enduring laws of society, and the belief that you can discover social fax and basic social laws to guide public policy is called positivism, and it was challenged by those who held that there were too many fax to compute and that humans were complex and ever changing and at times somewhat irrational, both when it came to economic choices and when it came to social ones.

I mean, how else do you explain the strange early 21st century rise of the crock?

Those theorists, called relativists and pragmatists have been in constant debate with positive ists right up until now.

And if you think we're getting in the middle of that, you're wrong.

Can we?

Rationally and with confidence, make infallible laws is a question I'm sure you'll be commenting upon.

Probably the most scandalous thinker of the time was the German philosopher Friedrich Nietzsche, who denied the certainty of truth, insisting that all knowledge simply represents what humans, from scientists to shopkeepers have perceived.

The human mind, for example, filters what nature is and presents its own sense of nature's truth.

A human representation of reality rather than reality itself, made you believe that absolute truths, including age old tenants of religion, were in decline.

God is dead.

We have killed him, he famously announced.

As the result of modern understandings of the universe, humans could now embark on the happy search for poetry's of life free from religious and other traditional rules.

Nietzsche eventually contracted syphilis and became mentally ill, and his sister converted the philosopher's disdain for traditional values into attacks on Jews and support for nationalists and anti Semites and militarists, a reminder that the ideas of modernism were tools that could be wielded in a variety of ways, which we will see with tragic consequences throughout the 20th century.

And so the turn of the century was alive with fresh ideas, upending concepts from painting and dance to philosophy and physics.

And we are living today in a world wrought by those ideas, but also one that is experiencing its own period of profound disruptions in the ways we communicate and how we understand truth and that makes you wonder how our revolutionary disruptions will seem a century from now.

Will this time be remembered as one in which people grew closer together through tools of communication?

Or will it be remembered as one in which people grew increasingly further apart as polarization worsened?

The answer to that is partly up to you and the choices that you will make that will shape our shared future.

Thanks for watching.

We'll see you next time.

Thanks for watching Crash Course, which is filmed here in the Jaden Smith Studios and made with the help of all of these nice people.

We have so many other crash courses, including this one in navigating digital information.

Thank you again for watching.

And as they say in my hometown, don't forget to be awesome.