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Mark Downie

@poppastring.com

๐Ÿง‘๐Ÿพโ€๐Ÿ’ปOSS (dasBlog) ๐ŸขPM @ Microsoft (Visual Studio, Core AI) ๐Ÿ€๐Ÿ“–๐ŸŽธ โœ๏ธ poppastring.com/blog

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25.04.2023
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Latest posts by Mark Downie @poppastring.com

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The way Book creates separation ๐Ÿ˜ฎโ€๐Ÿ’จ

Notches his 124th career 15+ point quarter, the sixth-most in the NBA since he was drafted in 2015.

07.03.2026 04:09 ๐Ÿ‘ 6 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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In my conversation with Jeffrey Snover on Coffee and Open Source, he talks about the evolution from when he started to today in developer tooling. Crazy to think what has changed in just 30-40 years. ... TikTok video by Isaac Levin

In my conversation with @jsnover.com on @coffeeandopensource.com, he talks about the evolution from when he started to today in developer tooling. Crazy to think what has changed in just 30-40 years.

www.tiktok.com/@isaacrlevin...
#developer #developertools #powershell #tech

06.03.2026 21:01 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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โœŠโš–๏ธ "I Am Somebody!" ๐ŸŒŸ ๐Ÿ•Š๏ธ
Rev. Jesse Jackson, 1972 Sesame Street

17.02.2026 17:07 ๐Ÿ‘ 1037 ๐Ÿ” 249 ๐Ÿ’ฌ 26 ๐Ÿ“Œ 36
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This is not good.

06.03.2026 13:40 ๐Ÿ‘ 8875 ๐Ÿ” 3472 ๐Ÿ’ฌ 713 ๐Ÿ“Œ 447

DeepSeek matched top US AI models at a fraction of the cost. If efficiency makes AI cheaper, do we use the same amount more efficiently or way more? This is the heart of Jevon's paradox. https://www.poppastring.com/blog/what-about-jevons-paradox #AI #JevonsParadox

06.03.2026 02:15 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Anthropic reported the first known AI-orchestrated cyber espionage campaign. Not theoretical โ€” detected and disrupted in real time. The details are worth reading closely. https://www.poppastring.com/blog/an-aiorchestrated-espionage-campaign #AI #Cybersecurity

05.03.2026 04:05 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

only ~200k people have watched this video since it went up the other day and i donโ€™t think thatโ€™s enough. we should play it in schools.

04.03.2026 00:58 ๐Ÿ‘ 394 ๐Ÿ” 80 ๐Ÿ’ฌ 15 ๐Ÿ“Œ 3

I am a shocked #wolves fan, we absolutely stink this year.

03.03.2026 22:44 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Embed Card for https://www.coffeeandopensource.com/guest/jeffrey-snover.html

Embed Card for https://www.coffeeandopensource.com/guest/jeffrey-snover.html

Had a great time chatting with @jsnover.com on @coffeeandopensource.com today about all kinds of #tech topics. Video is live on YouTube and podcast is available wherever you find them. Take a look/listen and thanks!
https://www.coffeeandopensource.com/guest/jeffrey-snover.html

03.03.2026 22:32 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I will take a win any way I can this year #wolves

03.03.2026 22:13 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Join the Visual Studio team as a Copilot Product Manager - Shape AIโ€‘powered developer experiences that are deeply integrated into Visual Studio #visualstudio #career #BlackJobsSky

apply.careers.microsoft.com/careers/job/...

03.03.2026 19:00 ๐Ÿ‘ 1 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

The V-formation maps cleanly to how we think about leadership: someone sets direction, others align behind. But the murmuration model โ€” distributed, adaptive, leaderless โ€” might be closer to how real teams work. https://www.poppastring.com/blog/leadership-from-birds #Leadership

03.03.2026 04:31 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Spot art.
Photo of presenter(s)
text reads: 
Clean Architecture with ASP.NET Core 10

Spot art. Photo of presenter(s) text reads: Clean Architecture with ASP.NET Core 10

#ASPNET Core provides better support for clean, testable, maintainable architectures than any of its predecessors.

In this #dotNETConf session replay, we learn the underlying principles that apply to project/solution organization. ๐ŸŽฅ buff.ly/Y7oJOyZ

03.03.2026 03:35 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Wow, never fails to amaze!๐Ÿ‘๐Ÿพ๐Ÿ’ช๐Ÿพ I think I have 12 in me right now. Give me 3 months I might get to 20 (and never get any higher ๐Ÿ˜‰).

02.03.2026 20:41 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

New pass time. You get out, get some exercise. I love it!

01.03.2026 03:25 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
A red headed wood pecker an a near vertical tree branch

A red headed wood pecker an a near vertical tree branch

Followed by a Red headed woodpecker. Today was a good day.

#columbusmetroparks

01.03.2026 03:06 ๐Ÿ‘ 5 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
A brown hawk sitting on a branch against a cloudless blue sky

A brown hawk sitting on a branch against a cloudless blue sky

Saw what I believe to be a Red tailed hawk today

#columbusmetroparks

01.03.2026 03:06 ๐Ÿ‘ 25 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

A shooโ€‘in for next year's Peace Prize.

01.03.2026 02:04 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

A post from the archive ๐Ÿ“ซ:
AI mistakes are very different from human mistakes


https://www.poppastring.com/blog/ai-mistakes-are-very-different-from-human-mistakes
#musings #artificialintelligence

28.02.2026 19:35 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Upgrading old code with Copilot I finally did it! DasBlog Core has been officially upgraded to .NET 10! This is ...

Upgrading old code with Copilot | by Mark Downie

buff.ly/KCB0DZN

#dotnet #copilot #dasblog #csharp #ai

27.02.2026 21:01 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
President & Chief Executive Officer, Greater Washington Urban League, Inc. | LeaderFit Greater Washington Urban League, Inc. President & Chief Executive Officer Location: Washington, DC Salary: $190-250k About the Greater Washington Urban League For more than 85 years, the Great

#BlackJobsSky
Greater Washington Urban League, Inc.
President & Chief Executive Officer
Location: Washington, DC
Salary: $190-250k

27.02.2026 21:35 ๐Ÿ‘ 2 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Maybe the most egregious thing to ever happen to a taco.

27.02.2026 16:58 ๐Ÿ‘ 82 ๐Ÿ” 10 ๐Ÿ’ฌ 16 ๐Ÿ“Œ 13

Just published ๐Ÿš€: Upgrading old code with Copilot


https://www.poppastring.com/blog/upgrading-old-code-with-copilot
#musings #dasblog

27.02.2026 04:36 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Post โ€” Beyond Breaking In

A great look at what it really takes to grow in tech once youโ€™re past the โ€œbreaking inโ€ stage. Worth your time!

Beyond Breaking Into Tech via @ladynaggaga.bsky.social

ladynaggaga.github.io/beyond-break...

27.02.2026 02:57 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

My extended team is looking for experienced TPMs in Release, Compliance, and Privacy Program Management.

All 3 roles have the potential to deliver huge impact on products used and loved by millions of developers!

apply.careers.microsoft.com/careers/job/...

27.02.2026 02:44 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Yep, I think that is about how I would think about it in terms of server side capabilities. Except dasblog does not need a database. Basically powered by xml and asp.net (MVC)

26.02.2026 23:55 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Release 10.0.1552 ยท poppastring/dasblog-core What's Changed Admin Design Updates by @poppastring in #718 Improve the admin mechanics by @poppastring in #725 Cryptographic method cleanup by @poppastring in #726 Refactor FindHeroImage to retur...

dasBlog is now on .NET 10! It turned into the largest release Iโ€™ve shipped. Copilot in Visual Studio made space for work that would have been out of reach otherwise. The whole effort became exactly the kind of learning moment I needed.

github.com/poppastring/...

26.02.2026 15:15 ๐Ÿ‘ 4 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Poisoning AI Training Data - Schneier on Security All it takes to poison AI training data is to create a website: I spent 20 minutes writing an article on my personal website titled โ€œThe best tech journalists at eating hot dogs.โ€ Every word is aโ€ฆ

Poisoning AI training data is, unfortunately, really not that hard.

www.schneier.com/blog/archive...

26.02.2026 05:16 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

A post from the archive ๐Ÿ“ซ:
The return of WinDbg


https://www.poppastring.com/blog/the-return-of-windbg
#diagnostics #debugging

25.02.2026 19:35 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I am of an age now where I can call anyone born after 1996 "young blood".

25.02.2026 02:40 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0