Rob Ripperda @RobRipperda

If we don’t build enough housing it really does make the economy more zero sum. One man’s income growth becomes another man’s less affordable first home

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Rob Ripperda @RobRipperda

7 months ago

@mattyglesias You didn't have Call of Duty waiting for you in your room.

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Rob Ripperda @RobRipperda

7 months ago

@conorsen Thank you institutional investors!

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Rob Ripperda @RobRipperda

7 months ago

@YIMBYLAND Six Flags? The Rangers? The Cowboys?

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Rob Ripperda @RobRipperda

7 months ago

@conorsen It is cool to live in Austin and three days of visiting a friend in Midtown in the spring made me think living in Atlanta would also be cool.

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Rob Ripperda @RobRipperda

7 months ago

nytimes.com/2025/09/05/rea…

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Some interesting things I learned this year: • 33% of the world’s population (= about 2.2 billion people) have never used the internet. • 38% of Stanford students are registered as having a disability (likely many of these are gaming the system to get extra time on exams). • HIV began spreading in the early 1900s in Africa but went largely unnoticed until the 1980s, as its deaths resembled other infectious diseases common in rural areas. • Manhattan today has about 650,000 fewer residents than it did in 1910. • Humans and octopuses evolved eyes independently, but in humans the optic nerve attaches in front of the retina, creating a blind spot, while in octopuses it attaches behind the retina, so they don’t have one. • Global suicide rates have declined by about 36% since 2000. • India is a major leather exporter, despite cows being considered sacred. Most hides come from water buffalo, which are not considered holy. • About 82% of dogs used by South Korea’s quarantine agency are cloned. Training costs are less than half those of randomly selected dogs, since only top performers are cloned. • Roughly 1% of the U.S. workforce is laid off each month, whereas in Germany it’s less than 0.1%. • Light pollution is causing birds worldwide to sing longer each day, extending their vocalizations by an average of 50 minutes. • Until the late 1980s, doctors often performed surgery on babies without anesthesia, due to the belief that infants did not feel pain. • People with Down syndrome have about half the rate of solid cancers compared to the general population, likely due to anti-cancer genes on chromosome 21. • At launch, SpaceX’s Starship produces instantaneous power equivalent to roughly 10% of the entire U.S. electricity grid. • China has built, on average, roughly one large dam per day since 1949.

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Rob Ripperda @RobRipperda

8 months ago

@mnolangray

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Matthew Continetti @continetti

8 months ago

'The question is whether we continue walling off opportunity behind million-dollar homes—or welcome the next generation of families into our neighborhoods.' @TobiasPeterAEI @AEI aei.org/op-eds/austins…

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Rob Ripperda @RobRipperda

8 months ago

This was a huge shift that the pandemic pushed on our kids and we need to give it more attention.

Jonathan Haidt @JonHaidt

8 months ago

The more time students spend on screens, the less they learn. Ed tech does not belong in schools (until it is thoroughly tested & proven to help). Excerpt from Jared Cooney Horvath's excellent new book, The Digital Delusion, in @TheFP thefp.com/p/we-gave-stud…

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Alex Tabarrok @ATabarrok

8 months ago

How higher fuel economy standards made the most fuel efficient cars unprofitable. marginalrevolution.com/marginalrevolu…

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Andrej Karpathy @karpathy

9 months ago

I am unreasonably excited about self-driving. It will be the first technology in many decades to visibly terraform outdoor physical spaces and way of life. Less parked cars. Less parking lots. Much greater safety for people in and out of cars. Less noise pollution. More space reclaimed for humans. Human brain cycles and attention capital freed up from “lane following” to other pursuits. Cheaper, faster, programmable delivery of physical items and goods. It won’t happen overnight but there will be the era before and the era after.

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Daniel Gross @grossdm

9 months ago

Headline says it all: EVs are booming in South America -- especially in the countries that permit Chinese imports. Yet another market US automakers are boxing themselves out of reuters.com/sustainability…