Remember: Just because an idea is old doesn't mean it's good.

Very interesting new report about how America's economic geography has changed since the great recession: https://t.co/l3YE4WzgKx

Short version: Places with lots of skilled workers are doing great, other places aren't. But more people are moving to the former, which is good.

And here are cool interactive maps to go along with the

Report is via @LettieriDC, who is doing great work on struggling places.

A bit of good news: People are moving from economically bad places to economically good places, though probably too slowly.

Rural America continues to languish.

1/OK, I should really write another thread about university-centric regional development, because I think people often make some (very understandable) mistakes when thinking about this issue.

2/The biggest myth, I think, is that universities help regions by educating locals as undergraduates.

Skeptics of universities say: "But most of the people who graduate end up leaving."

3/In fact, most of what a university does for a regional economy is NOT about educating local kids.

Educating local kids is good for the nation, but doesn't help a region much.

The way a university helps a region is through

4/Undergraduates usually leave town after graduation.

But university RESEARCH pulls in OTHER smart people from other regions, and they stay there.

Here's a paper showing that this is the main way universities increase a region's human capital:

5/Research also pulls in business investment.

Companies want to partner with university labs, so they can commercialize the technologies the labs produce. So they invest in the labs, and sometimes they even put their offices in the town.

1/ Something strange is happening with people’s sex lives. 20-somethings are having sex later and less frequently than previous generations. I spent several months digging into this for @theatlantic. https://t.co/5ehzmWY9wi

2/ This phenomenon—I’m calling it a Sex Recession—really surprised me. It seemed improbable in the age of Tinder, digital porn, and attitudes that are generally permissive and sex-positive.

3/ What’s happening isn’t exclusively American: Similar trends are being observed in other countries, including Japan, Australia, the U.K., Finland, and the Netherlands.

4/ One cause is obvious: Adults under 35 are less likely to be living with a partner than in recent decades, and more likely to be living with their parents—which, it’s safe to say, isn’t great for one’s sex life.

5/ But I also found other explanations, each with profound implications. The first, unsurprisingly, has to do with internet enticements. Netflix and other online entertainment may be substituting for sex.

1. Most people are aware of the fail doxes posted by Jamilla Moor on @Snakeeater36 and myself. I'm going to go into the details (in layman terms) of exactly how a specific group of duhnonymous idiots came up with these fail doxes & I'll prove that they're wrong.

2. @Snakeeater36 posted this screenshot on his TL. He had exposed the page source code on tweet which included an image. Anyone can do this in Chrome by opening a tweet, clicking on the image, then right click on any open space on the screen, select "inspect", then "network".

3. In fact I did the same by pulling up a different tweet and image. You'll see the IP highlighted in yellow and the region Dallas TX. It's not my IP. It belongs to Akamai which is identified. Why is that important.......

4. Well Akamai is a Content Delivery Network also known as a CDN. A CDN, is a geographically distributed network of proxy servers (make note of the term "proxy" servers) and their data centers. More later on why this is important relative to the fail doxes.

5. CDNs allow companies like Twitter to provide better performance in uploading content, like images, by distributing the service spatially relative to end users. Rather than pushing content directly (left), Twitter uses CDN networks (right) to push/pull images from end users.

1/OK, I should really write another thread about university-centric regional development, because I think people often make some (very understandable) mistakes when thinking about this issue.

2/The biggest myth, I think, is that universities help regions by educating locals as undergraduates.

Skeptics of universities say: "But most of the people who graduate end up leaving."

3/In fact, most of what a university does for a regional economy is NOT about educating local kids.

Educating local kids is good for the nation, but doesn't help a region much.

The way a university helps a region is through

4/Undergraduates usually leave town after graduation.

But university RESEARCH pulls in OTHER smart people from other regions, and they stay there.

Here's a paper showing that this is the main way universities increase a region's human capital:

5/Research also pulls in business investment.

Companies want to partner with university labs, so they can commercialize the technologies the labs produce. So they invest in the labs, and sometimes they even put their offices in the town.

@Suman68082748 @thetwinkwolff @x_karran_x @Sunil9130 Lets stop the criticism guys. The lad is good. Losses happen. Losses to unranked players happen too. As do wins vs top 10ers. Let's accept both. Remember Sumit and the likes of him are the best we have. See the bigger picture please.

@thetwinkwolff @x_karran_x @Sunil9130 When the Europeans or South Americans were getting quality practice and tourneys week in week out at reasonable costs, our kids were playing on dung courts or learning outdated serve and volley on grass. Appreciate the fact that the last 10 years have been a hell lot better than

@thetwinkwolff @x_karran_x @Sunil9130 the 10 before that. Real change can't come in a day or even in 10 years. So let's grit our teeth and bide our time till we have an organic self sustaining system in place.

@siyer30 @SportaSmile @Cric_Writer @RomilShukla @amanthejourno

@thetwinkwolff @x_karran_x @Sunil9130 @siyer30 @SportaSmile @Cric_Writer @RomilShukla @amanthejourno Tennis is my favourite sport in the universe. Has always been. Will always be. I was in love with Steffi and Pete a lot before I fell for Sachin. And while I would love every toddler in my family to play sports professionally, I won't encourage them to pursue my favourite sport.

@thetwinkwolff @x_karran_x @Sunil9130 @siyer30 @SportaSmile @Cric_Writer @RomilShukla @amanthejourno It will be career suicide. In other sports, I can actually plan for my ward to be the next Lin Dan or the next Tiger Woods or the next Schumacher even from a base in India. With tennis, in 2020 I can't do that realistically. Just doesn't adds up. Even for total freaks of nature.

@danielashby @AdamWJT @Greens4HS2 @TheGreenParty @GarethDennis @XRebellionUK @Hs2RebelRebel @HS2ltd I'll bite. Let's try to keep it factual. There's a reasonable basis to some aspects of this question, that it might be possible to agree on. Then there are other, more variable, elements which depend on external factors such as transport and energy policy. /1

@AdamWJT @Greens4HS2 @TheGreenParty @GarethDennis @XRebellionUK @Hs2RebelRebel @HS2ltd First up, we know reasonably well how much energy it takes to propel a high-speed train along the HS2 route. We can translate that into effective CO2 generated by making some assumptions about how green the electricity grid is. /2

@AdamWJT @Greens4HS2 @TheGreenParty @GarethDennis @XRebellionUK @Hs2RebelRebel @HS2ltd Secondly, we have a reasonable grasp of how much CO2 is going to be generated by building HS2 - there are standard methods of working this out, based on the amount of steel, concrete, earthmoving, machine-fuelling etc required. /3

@AdamWJT @Greens4HS2 @TheGreenParty @GarethDennis @XRebellionUK @Hs2RebelRebel @HS2ltd Thirdly, we can estimate how much CO2 is generated by cutting down trees, and how much is captured by planting new trees. We can also estimate how much CO2 is needed to keep the railway running and generated by maintaining the track /4

@AdamWJT @Greens4HS2 @TheGreenParty @GarethDennis @XRebellionUK @Hs2RebelRebel @HS2ltd We know how much CO2 is saved by moving goods by freight train on the lines freed up by moving the express trains on to HS2, rather than by truck. /5