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Mathematician Hannah Fry's TED talk on patterns in dating and mate-seeking, including optimal stopping and three math-backed tips for finding a partner.

Hans Rosling and his son Ola run an audience quiz with global population, health and income data to show how wrong most people are about the world. Ola then gives four ways to get less ignorant.

Adam Conover's talk at a millennial marketing conference argues that generations are an unscientific, condescending idea and that millennials do not exist as a real category. The description notes that researcher Jean Twenge later said he misrepresented some of her work.

Black musician Daryl Davis tells how a chance encounter led him to befriend Ku Klux Klan members and seek the source of racial hate. He argues that sitting down and talking with people can change them.

Jon Ronson's TED talk on public shaming on Twitter, centered on Justine Sacco and others whose lives were upended by online mobs. He argues we have become a baying crowd and should rethink how we treat each other online.

An excerpt of the 2005 Harvard debate in which Steven Pinker gives his prepared case on biological sex differences and the under-representation of women in science. It covers cross-cultural patterns in preferences and abilities and the overlap between male and female distributions.

Hans Rosling's TEDxSummit talk asks whether some religions have higher birth rates and how that affects population growth. He charts data across time and religions and reaches a surprising conclusion about fertility.

Santa Clara County District Attorney Jeff Rosen explains in a TEDx talk why Germany has lower crime and far fewer prisoners than the US, and what American criminal justice could learn from German prisons.

The 1965 Cambridge Union debate between James Baldwin and William F. Buckley on race, justice and history in America. Baldwin argues that the American dream came at the expense of Black Americans.

Documentary filmmaker Cassie Jaye explains how making The Red Pill led her, a feminist, to reevaluate her assumptions about the Men's Rights movement. She argues for listening to people you think of as the enemy.

An RSA Animate adaptation of a Slavoj Zizek talk on charitable giving and ethical consumerism. It argues that buying products that bundle a charity donation can sustain the system that causes the problems.

Gary Yourofsky's 2010 lecture at Georgia Tech arguing for veganism on ethical, health and environmental grounds. It is a long, forceful animal-rights speech.

Hans Rosling's TED@Cannes talk uses boxes and animated data graphics to show how world population will grow to about 9 billion. He argues that raising living standards for the poorest is what reduces population growth.

Megan McArdle's AEI Vision Talk 'Capital and Poverty' argues that social and financial capital work differently in low-income communities, and that this explains barriers to reaching the middle class.

Cindy Gallop gives a 4-minute TED2009 talk arguing hardcore pornography has distorted how young men think about sex. She introduces her website MakeLoveNotPorn as a response.

Christian Picciolini tells how he became a white supremacist at 14 and led America's first neo-Nazi skinhead gang, then how he left. He shares a counterintuitive approach to countering hate and co-founded Life After Hate.

A Google Ventures talk on how unconscious biases shape product decisions, hiring and workplace interactions. It draws on research, including work by Google scientists, on how to counter them.

Anna Rosling Rönnlund presents Dollar Street, a project photographing homes in dozens of countries, from stoves to beds to toilets, and sorting them by income. She shows how data visualization can change how we see the world.

A short clip of Neil deGrasse Tyson answering a question about why there are not more women in science. He describes the resistance he faced as a Black kid pursuing science and the systemic barriers many people encounter.

Richard Wilkinson presents data showing that societies with larger income gaps do worse on health, lifespan, trust and other measures. He argues the effects track inequality itself rather than average income. It is a 17-minute TED talk.

Lieutenant General Mark Hertling gives a TEDx talk arguing that obesity and poor youth fitness are a national security problem because too few young Americans can meet military physical requirements.

A TEDxBangalore talk by The Ugly Indian, an anonymous collective, asking why Indians tolerate filthy public spaces. It describes their volunteer approach of quietly cleaning up spots and turning the tragedy of the commons into a victory.

A speech by comedian Konstantin Kisin at an Oxford Union debate on whether woke culture has gone too far. He argues the case in a short segment of the debate.

Mark Fisher's 2014 talk in Zagreb on the slow cancellation of the future, about cultural stagnation and the sense that popular culture has stopped producing the new.

Ricardo Signes' YAPC::Asia Tokyo 2011 talk on the legends and horrors of email: how messy the SMTP and email standards are in practice. The first few minutes are Perl-specific, but the rest applies to anyone handling email.

Bret Victor's talk "Inventing on Principle" argues that creators should find a guiding principle to fight for. He shows demos of immediate-feedback tools, such as live-updating code and animation editors.