John Paul Helveston
@jhelvy.bsky.social
Systems Eng Prof @ GWU 🦛 | Director, Data Analytics MS Program | EVs 🔋🚗 | Low Carbon Tech | Choice Modeling | Survey Research | China | US-China Policy | #rstats | #reproducibility | #opensource | Father | opinions own
Pinned
John Paul Helveston
@jhelvy.bsky.social
· Sep 25
Hi everyone! 👋
I didn't really give a great intro when joining, so here's a short introductory thread to folks who want to connect here. Quick summary:
- #Rstats dev
- Choice modeling
- Global EV industry
- Consumer preference modeling
- China
- Industrial Policy
Details in a 🧵... (1/6)
I didn't really give a great intro when joining, so here's a short introductory thread to folks who want to connect here. Quick summary:
- #Rstats dev
- Choice modeling
- Global EV industry
- Consumer preference modeling
- China
- Industrial Policy
Details in a 🧵... (1/6)
🎉 Announcing surveydown v1.0.0!
surveydown is an #opensource #rstats package for building surveys with #Quarto & #Shiny. This release improves the survey design experience, including:
- Simplified YAML settings
- Auto page navigation
- Previous buttons!
More at surveydown.org/blog/2025-11...
surveydown is an #opensource #rstats package for building surveys with #Quarto & #Shiny. This release improves the survey design experience, including:
- Simplified YAML settings
- Auto page navigation
- Previous buttons!
More at surveydown.org/blog/2025-11...
Announcing surveydown v1.0.0! – surveydown.org
We are thrilled to announce the v1.0.0 release of surveydown, a stable release with improvements to YAML settings, page navigation, question creation, and a smoother overall developer experience.
surveydown.org
November 25, 2025 at 9:53 PM
🎉 Announcing surveydown v1.0.0!
surveydown is an #opensource #rstats package for building surveys with #Quarto & #Shiny. This release improves the survey design experience, including:
- Simplified YAML settings
- Auto page navigation
- Previous buttons!
More at surveydown.org/blog/2025-11...
surveydown is an #opensource #rstats package for building surveys with #Quarto & #Shiny. This release improves the survey design experience, including:
- Simplified YAML settings
- Auto page navigation
- Previous buttons!
More at surveydown.org/blog/2025-11...
Definitely a great way to exude more seriousness is to change the name from "Loan Program Office" to "Energy Dominance Finance" I mean for sure it's just so super serious
www.eenews.net/articles/wri...
www.eenews.net/articles/wri...
Wright overhauls DOE, reflecting shift in US energy priorities
The Energy secretary has reshaped the department to promote fossil fuels, nuclear power and critical minerals.
www.eenews.net
November 23, 2025 at 1:00 AM
Definitely a great way to exude more seriousness is to change the name from "Loan Program Office" to "Energy Dominance Finance" I mean for sure it's just so super serious
www.eenews.net/articles/wri...
www.eenews.net/articles/wri...
This will destroy US Science
“The prohibited activities would include joint research, co-authorship on papers, and advising a foreign graduate student or postdoctoral fellow. The language is retroactive, meaning any interactions during the previous 5 years could make a scientist ineligible for future federal funding.”
U.S. Congress considers sweeping ban on Chinese collaborations
Researchers speak out against proposal that would bar funding for U.S. scientists working with Chinese partners or training Chinese students
www.science.org
November 14, 2025 at 1:08 PM
This will destroy US Science
My talk from #positconf 2025 is now up! I got to introduce our survey platform and #rstats package #surveydown. It's been a fun project with @pingfanhu.bsky.social & Bogdan Bunea, and I hope it can be useful for the community of survey researchers out there!
www.youtube.com/watch?v=Vwoe...
www.youtube.com/watch?v=Vwoe...
surveydown (John Paul Helveston, GWU) | posit::conf(2025)
YouTube video by Posit PBC
www.youtube.com
November 8, 2025 at 1:06 PM
My talk from #positconf 2025 is now up! I got to introduce our survey platform and #rstats package #surveydown. It's been a fun project with @pingfanhu.bsky.social & Bogdan Bunea, and I hope it can be useful for the community of survey researchers out there!
www.youtube.com/watch?v=Vwoe...
www.youtube.com/watch?v=Vwoe...
Thanks to this bussin new #rstats 📦 by @hadley.nz,
you can now yeet rows and vibe_check columns in your data frames, no cap
hadley.github.io/genzplyr/
you can now yeet rows and vibe_check columns in your data frames, no cap
hadley.github.io/genzplyr/
dplyr but make it bussin fr fr no cap
`genzplyr` is an alternative syntax for `dplyr` that replaces boring old function names with GenZ slang. Your data wrangling is about to hit different.
hadley.github.io
November 7, 2025 at 12:20 AM
Thanks to this bussin new #rstats 📦 by @hadley.nz,
you can now yeet rows and vibe_check columns in your data frames, no cap
hadley.github.io/genzplyr/
you can now yeet rows and vibe_check columns in your data frames, no cap
hadley.github.io/genzplyr/
Some noted that the BEV ranges in my article were unadjusted (China's CLTC cycle over-estimates range compared to the U.S.'s EPA cycle). So I now have an interactive app that allows you to explore how the main scatterplot looks with an adjustment factor:
jhelvy.github.io/science-2025/
jhelvy.github.io/science-2025/
November 6, 2025 at 10:27 PM
Some noted that the BEV ranges in my article were unadjusted (China's CLTC cycle over-estimates range compared to the U.S.'s EPA cycle). So I now have an interactive app that allows you to explore how the main scatterplot looks with an adjustment factor:
jhelvy.github.io/science-2025/
jhelvy.github.io/science-2025/
🚗⚡ New in @science.org: My piece on why the U.S. needs to rethink its approach to China's electric vehicle industry (and what's at stake if it doesn’t).
The competitive gap is bigger than you think. Thread 🧵
www.science.org/doi/10.1126/...
The competitive gap is bigger than you think. Thread 🧵
www.science.org/doi/10.1126/...
How collaboration with China can revitalize US automotive innovation
Strategic collaboration, not protectionist barriers, should be pursued
doi.org
October 30, 2025 at 6:18 PM
🚗⚡ New in @science.org: My piece on why the U.S. needs to rethink its approach to China's electric vehicle industry (and what's at stake if it doesn’t).
The competitive gap is bigger than you think. Thread 🧵
www.science.org/doi/10.1126/...
The competitive gap is bigger than you think. Thread 🧵
www.science.org/doi/10.1126/...
When the data tells a clear story, we all make the same chart 📊
Left: From @hannahritchie.bsky.social's ourworldindata piece (Oct 24, 2025) on EV sales:
ourworldindata.org/electric-car...
Right: a slide from a talk I gave at Princeton in Feb. 2025
jhelvy.github.io/slides-old/2...
Left: From @hannahritchie.bsky.social's ourworldindata piece (Oct 24, 2025) on EV sales:
ourworldindata.org/electric-car...
Right: a slide from a talk I gave at Princeton in Feb. 2025
jhelvy.github.io/slides-old/2...
October 30, 2025 at 1:37 AM
When the data tells a clear story, we all make the same chart 📊
Left: From @hannahritchie.bsky.social's ourworldindata piece (Oct 24, 2025) on EV sales:
ourworldindata.org/electric-car...
Right: a slide from a talk I gave at Princeton in Feb. 2025
jhelvy.github.io/slides-old/2...
Left: From @hannahritchie.bsky.social's ourworldindata piece (Oct 24, 2025) on EV sales:
ourworldindata.org/electric-car...
Right: a slide from a talk I gave at Princeton in Feb. 2025
jhelvy.github.io/slides-old/2...
As an #rstats user, I am proud of my #python brothers and sisters for standing up for their community. It's a shame they won't have these resources, but community is and always has been what makes a language great. Today the python world stood up for theirs
pyfound.blogspot.com/2025/10/NSF-...
pyfound.blogspot.com/2025/10/NSF-...
The PSF has withdrawn a $1.5 million proposal to US government grant program
pyfound.blogspot.com
October 27, 2025 at 11:30 PM
As an #rstats user, I am proud of my #python brothers and sisters for standing up for their community. It's a shame they won't have these resources, but community is and always has been what makes a language great. Today the python world stood up for theirs
pyfound.blogspot.com/2025/10/NSF-...
pyfound.blogspot.com/2025/10/NSF-...
My controversial take on K-pop demon hunters: "Free" is the best song on the soundtrack
youtu.be/fjOeJssZX_Q?...
youtu.be/fjOeJssZX_Q?...
"Free" | Official Lyric Video | Sony Animation
YouTube video by Sony Pictures Animation
youtu.be
October 24, 2025 at 10:04 PM
My controversial take on K-pop demon hunters: "Free" is the best song on the soundtrack
youtu.be/fjOeJssZX_Q?...
youtu.be/fjOeJssZX_Q?...
This is an exceptional article. @kaiserkuo.bsky.social puts in words thoughts I've had for years about the intellectual challenge the west faces in reckoning with China's success, not just in modernizing but in some critical areas leading, while historical leaders remain unaware they no longer lead.
I have a new, long piece in The Ideas Letter called “The Great Reckoning: What the West Should Learn from China," arguing that we must learn from China even (or especially) when its successes unsettle our assumptions. Link below.
October 24, 2025 at 12:53 PM
This is an exceptional article. @kaiserkuo.bsky.social puts in words thoughts I've had for years about the intellectual challenge the west faces in reckoning with China's success, not just in modernizing but in some critical areas leading, while historical leaders remain unaware they no longer lead.
You should read this wonderful little history of the #tidyverse, by @hadley.nz.
It reminded me about my early #rstats days as a PhD student (2011 - 2016), where I was constantly trying out the new things Hadley and crew were cooking up.
hadley.github.io/25-tidyverse...
It reminded me about my early #rstats days as a PhD student (2011 - 2016), where I was constantly trying out the new things Hadley and crew were cooking up.
hadley.github.io/25-tidyverse...
A personal history of the tidyverse
hadley.github.io
October 22, 2025 at 11:30 AM
You should read this wonderful little history of the #tidyverse, by @hadley.nz.
It reminded me about my early #rstats days as a PhD student (2011 - 2016), where I was constantly trying out the new things Hadley and crew were cooking up.
hadley.github.io/25-tidyverse...
It reminded me about my early #rstats days as a PhD student (2011 - 2016), where I was constantly trying out the new things Hadley and crew were cooking up.
hadley.github.io/25-tidyverse...
"Golden" is going to go down as the "Queen of the Night" aria of our time
October 21, 2025 at 12:25 PM
"Golden" is going to go down as the "Queen of the Night" aria of our time
You beat authoritarians by sticking together
October 21, 2025 at 10:04 AM
You beat authoritarians by sticking together
Heartbreaking loss...GM Daniel Naroditsky, just 29 year old. Not just a genius chess player, but a huge personality and amazing human being.
www.chess.com/news/view/gr...
www.chess.com/news/view/gr...
Grandmaster, Popular Commentator Daniel Naroditsky Tragically Passes Away At 29
GM Daniel Naroditsky, the popular U.S. grandmaster, commentator, creator, educator, and author, unexpectedly passed away on Sunday at the age of only 29.
www.chess.com
October 20, 2025 at 7:47 PM
Heartbreaking loss...GM Daniel Naroditsky, just 29 year old. Not just a genius chess player, but a huge personality and amazing human being.
www.chess.com/news/view/gr...
www.chess.com/news/view/gr...
Truly an amazing work. If you like #dataviz and good story telling, this is quite an achievement.
Well, this is just delightful. It has everything: data, survey, charts, stories, videos, scrollytelling, animations, 3D modelling, interviews... 📊
Inside the confusing world of women’s clothing sizes
Why does shopping for clothes feel like a guessing game? We looked at the numbers to find out.
www.straitstimes.com
October 20, 2025 at 12:38 AM
Truly an amazing work. If you like #dataviz and good story telling, this is quite an achievement.
Vought is the true wanna be king in this administration - a Cristian Nationalist bent on destroying as many institutions as possible to consolidate his power. Little Don and Elon are just his play things.
www.propublica.org/article/russ...
www.propublica.org/article/russ...
Russell Vought, Trump’s Shadow President
From the wholesale gutting of federal agencies to the ongoing government shutdown, Russell Vought has drawn the road map for Trump’s second term. Vought has consolidated power to an extent that inside...
www.propublica.org
October 19, 2025 at 11:51 AM
Vought is the true wanna be king in this administration - a Cristian Nationalist bent on destroying as many institutions as possible to consolidate his power. Little Don and Elon are just his play things.
www.propublica.org/article/russ...
www.propublica.org/article/russ...
Happy Sic Semper Tyrannis Day!
October 18, 2025 at 4:49 PM
Happy Sic Semper Tyrannis Day!
Actually it's worse than that. Most of the energy expended by a (gas) car is exhausted as waste heat, then most of the *remaining* energy is spent on moving the weight of the car.
There are more people on bikes than there are people in cars in this photo.
We could move more people if we gave cyclists more space.
Most of the energy spent moving a bike is moving the weight of the rider.
Most of the energy expended by a car is moving the weight of the car.
We could move more people if we gave cyclists more space.
Most of the energy spent moving a bike is moving the weight of the rider.
Most of the energy expended by a car is moving the weight of the car.
October 17, 2025 at 11:26 PM
Actually it's worse than that. Most of the energy expended by a (gas) car is exhausted as waste heat, then most of the *remaining* energy is spent on moving the weight of the car.
I knew MIT hired smart people
www.nytimes.com/2025/10/10/u...
www.nytimes.com/2025/10/10/u...
M.I.T. Rejects a White House Offer for Special Funding Treatment
www.nytimes.com
October 10, 2025 at 4:47 PM
I knew MIT hired smart people
www.nytimes.com/2025/10/10/u...
www.nytimes.com/2025/10/10/u...
October 8, 2025 at 10:49 AM
The south park satire of ICE is not satire.
"Jones, 27, is among the residents left at 7500 S. South Shore Drive who are trying to piece together what remains after an early morning, high-powered federal immigration raid led to the arrests of dozens of their neighbors at their South Shore apartment building."
Massive immigration raid on Chicago apartment building leaves residents reeling: 'I feel defeated'
The Department of Homeland Security said federal agents with Border Patrol, the FBI and the Bureau of Alcohol, Tobacco, Firearms and Explosives arrested 37 people in the raid.
chicago.suntimes.com
October 2, 2025 at 11:35 PM
The south park satire of ICE is not satire.
Great article in Newsweek by Rebecca Fannin on the dominant position of Chinese EVs globally and the implications for the future of automotive and defense. Well-researched article with quotes from me, Paul S. Triolo, Michael Dunne, Kara Kockelman, and others.
www.newsweek.com/chinas-ev-su...
www.newsweek.com/chinas-ev-su...
China’s EV supremacy raises national security concerns for the US
China is in the driver’s seat when it comes to EV technology—which poses huge defense implications for the U.S.
www.newsweek.com
October 1, 2025 at 11:30 PM
Great article in Newsweek by Rebecca Fannin on the dominant position of Chinese EVs globally and the implications for the future of automotive and defense. Well-researched article with quotes from me, Paul S. Triolo, Michael Dunne, Kara Kockelman, and others.
www.newsweek.com/chinas-ev-su...
www.newsweek.com/chinas-ev-su...
