Nonrival

Expert analysis from think tanks and academia, on public policy, economics, and technology.
Human experts. AI summaries.

Elite PhD programs genuinely make economists more productive — which means the endowment tax could slow scientific progress

voxeu

• Using a rare dataset of MIT Economics PhD applicants, researchers find that graduates of elite programs publish 60-75% more high-impact research than equally talented peers who attended less prestigious schools — suggesting the advantage is real, not just a selection effect.
• Two obvious alternative explanations — peer effects from clustering talented students together, and editorial favoritism at department-affiliated journals — don't hold up under scrutiny.
• This means the GOP's new endowment tax, which is already prompting Harvard, MIT, and Chicago to slash PhD admissions, could meaningfully slow the pace of economic and scientific research.

South Korea's Stock Market Has Tripled in a Year — and Two Chip Companies Are Behind Almost All of It

csis

• South Korea's stock market has tripled in value over the past year, driven almost entirely by SK Hynix and Samsung Electronics, which together now account for more than half the benchmark index — a level of concentration rarely seen anywhere in the world.
• The boom is fueled by insatiable AI-driven demand for memory chips, but it's being amplified by a wave of retail investors borrowing heavily to buy in, raising the stakes if sentiment turns.
• The article argues the setup closely resembles past bubbles: if the chip cycle turns or AI investment cools, the fallout could hit South Korea far harder than most economies given how exposed ordinary investors and the broader market now are.

AI Agents Are Breaking the Internet's Assumption That You're Human

noema

• The web was built on the presumption that users are real people, but AI agents can now write code, post comments, attend meetings, and manipulate public opinion at scale — making that assumption dangerously obsolete.
• Two distinct crises are emerging: 'Sybil collapse,' where one person can deploy thousands of convincing agents to fake majority opinion, and 'attribution collapse,' where it's impossible to tell who is legally or morally responsible for an agent's actions.
• A proposed fix — 'proof of personhood' credentials that verify humanness without revealing identity — would be more than a technical patch; it would reshape the fundamental rules of who gets to speak, vote, and transact online.

In the News

The Supreme Court Just Freed Political Parties to Spend Unlimited Money on Candidates

the_conversation

• The Supreme Court struck down decades-old limits on how much political parties can spend in coordination with their candidates, ruling the caps violated First Amendment free speech rights.
• The decision overturns a 2001 ruling that had upheld the limits on the grounds that coordinated spending created corruption risks, with the new majority unconvinced those risks justify the speech restrictions.
• The ruling could funnel billions more through party committees in future elections — which some see as dangerous for democracy, while others argue stronger parties could actually curb the extremism fueled by outside super PAC spending.

Analysis

When CEOs Take Political Stands, Consumers React on Principle — Not Just to Look Good

uva_darden

• A novel field experiment — researchers actually launched a real coffee brand — found that consumers punish or reward companies based on CEO political stances, and this behavior is driven by genuine ideology, not social signaling.
• The effect is surprisingly strong: people favoring stricter gun laws would need a 75% price cut to buy from a pro-gun-rights CEO's brand, suggesting political consumerism is costly and durable.
• The implication for business leaders is significant: ideological backlash isn't just a risk for high-profile consumer brands — it could affect any company, even those selling unglamorous products like motor oil.

Also Worth a Look

• The Supreme Court Rules That Trump Cannot End Birthright Citizenship by Executive Order (scotusblog)
• The Supreme Court Just Ruled That Police Need a Warrant to Access Your Phone's Location Data — Even From Google (the_conversation)
• Bolivia's New Pro-U.S. President Is Under Siege — and Washington Isn't Paying Attention (csis)
• A Trump AI Program to Cut Medicare Fraud Is Delaying Care and Raising Conflict-of-Interest Alarms (think_global_health)
• A Running Timeline of Every Major Move in Trump's Second-Term Trade War (peterson)
• Trump's Trade War With Mexico Is Hurting the Wrong Target — and Helping China (the_conversation)
• The Supreme Court Just Settled the Birthright Citizenship Debate, and the Key Was a 1608 British Legal Case (the_conversation)