# radius — RSS Amplifier

Recent posts from the 6 feeds in the RSS Amplifier directory that cover radius.

Page: <https://rssamplifier.com/topics/radius>  
Feed: <https://rssamplifier.com/topics/radius.md>

---

## Pride

_2026-08-09 · RADIUS Church Sermons_

[Listen](https://t.subsplash.com/r/aHR0cHM6Ly9jZG4uc3Vic3BsYXNoLmNvbS9hdWRpb3MvOFBOQzY1LzUwNTQ5NzE1LTVhOGEtNGI1NS1hZDM1LTdkN2ZhOWJjODQxZC9hdWRpby5tcDM.mp3?k=8PNC65&s=3&sapid=9xqvrzd)

## [How lucky can a baseball team get?](http://joshmaxsilverman.github.io/2026-08-09-fiddler-baseball-league/)

_2026-08-09 · Jamshrivelson_

When every team is the same, how best is the best? - Question: The Fiddler Baseball League consists of exactly two teams of equal skill: the Algebraists and the Geometers. Over the course of a season, these two teams play each other 162 times. Each team has an equal chance of winning each game, and the results of games are independent of...

## Extended Cut | Pride and Envy

_2026-08-04 · RADIUS Church Sermons_

[Listen](https://t.subsplash.com/r/aHR0cHM6Ly9jZG4uc3Vic3BsYXNoLmNvbS9hdWRpb3MvOFBOQzY1LzhkYzcxZjg2LWY2M2UtNDVlNC1hNGVjLTA2YWExNDg2YjFiZC9hdWRpby5tcDM.mp3?k=8PNC65&s=3&sapid=yjrys2f)

## Envy

_2026-08-02 · RADIUS Church Sermons_

[Listen](https://t.subsplash.com/r/aHR0cHM6Ly9jZG4uc3Vic3BsYXNoLmNvbS9hdWRpb3MvOFBOQzY1LzA3MTFhMjBiLTQ1MzktNDNiZi05Njc5LWE3ZDQ0Zjg5MDMyMi9hdWRpby5tcDM.mp3?k=8PNC65&s=3&sapid=r438bs9)

## Known by the Lord | Psalm 139

_2026-07-26 · RADIUS Church Sermons_

[Listen](https://t.subsplash.com/r/aHR0cHM6Ly9jZG4uc3Vic3BsYXNoLmNvbS9hdWRpb3MvOFBOQzY1L2VlZDllMTc3LWQyM2YtNDJiOS1hYTJjLTYyN2NmY2Q2OGI5My9hdWRpby5tcDM.mp3?k=8PNC65&s=3&sapid=75qvcb4)

## Seen by the Lord | Psalm 32

_2026-07-19 · RADIUS Church Sermons_

[Listen](https://t.subsplash.com/r/aHR0cHM6Ly9jZG4uc3Vic3BsYXNoLmNvbS9hdWRpb3MvOFBOQzY1LzJmY2RiZTcyLWZmMzQtNGVkYy04ZDgzLWI3MTU5NmM1ZTMxMC9hdWRpby5tcDM.mp3?k=8PNC65&s=3&sapid=xpt4xnf)

## [Can you win the World Cup?](http://joshmaxsilverman.github.io/2026-07-19-can-you-win-the-world-cup/)

_2026-07-19 · Jamshrivelson_

How well can you win when you're the only one with a plan? - Question Congratulations to Fiddler Nation for making it to the semifinals of the World Cup! All four teams that made it this far are equally matched in that they each possess the same total amount of “energy.” In advance of each semifinal game, teams must independently decide how much of...

## [Can you power up the hill?](http://joshmaxsilverman.github.io/2026-07-16-hhh/)

_2026-07-16 · Jamshrivelson_

Two champion cyclists, each optimized for a different facet of their sport, will tie if you can stretch the hill just so. - Question: This time, we’ll be looking at a model for a cyclist’s speed $v$ as a function of their pedaling power $P$, their mass $m$, and the ground’s angle of inclination $\\theta$: \\\[v=\\frac{P}{m\\sin{\\theta}+10}\\\] In cycling, roads are marked with a gradient $g$, which is a…

## Safe in the Lord | Psalm 91

_2026-07-12 · RADIUS Church Sermons_

[Listen](https://t.subsplash.com/r/aHR0cHM6Ly9jZG4uc3Vic3BsYXNoLmNvbS9hdWRpb3MvOFBOQzY1LzQ4ZDAxNjgyLWM4MmQtNGE0YS05MDFjLTZhODBmNjBmYjZlMC9hdWRpby5tcDM.mp3?k=8PNC65&s=3&sapid=mpvth2q)

## [Running a Software Factory on a Self-Hosted AI Coding Agent Platform](https://www.arnaudp.dev/running-a-software-factory-on-a-self-hosted-ai-coding-agent-platform/)

_2026-07-08 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

A field report from week one on a self-hosted AI coding agent platform: 13 agents, 81 issues, the real token-cost fight, and why humans still review.

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_2026-07-08 · **Sponsored**_

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## Contrite before the Lord | Psalm 121

_2026-07-05 · RADIUS Church Sermons_

[Listen](https://t.subsplash.com/r/aHR0cHM6Ly9jZG4uc3Vic3BsYXNoLmNvbS9hdWRpb3MvOFBOQzY1Lzg1NWJjNDFhLWUxYTAtNDNmOC04NmJhLTRkMzY5MDJjOGJlNC9hdWRpby5tcDM.mp3?k=8PNC65&s=3&sapid=mzq979x)

## Thirst for the Lord | Psalms 42-43

_2026-06-28 · RADIUS Church Sermons_

[Listen](https://t.subsplash.com/r/aHR0cHM6Ly9jZG4uc3Vic3BsYXNoLmNvbS9hdWRpb3MvOFBOQzY1LzBiZDc2YzFjLThjOTItNGY0My1iNzk5LTgyNmI4MjEwOGUwMi9hdWRpby5tcDM.mp3?k=8PNC65&s=3&sapid=fk6v5yk)

## [More Than One Way to Test Cloud Security. Theory vs Practice.](https://hackaws.cloud/blog/more-than-one-way-to-test-cloud-security)

_2026-06-22 · hackaws.cloud Blog_

Cloud security testing decomposes into five disciplines: CSPM, CIS compliance audit, penetration test, attack path analysis, and executed blast radius assessment. Three of them reason in theory. Two of them actually walk the path. None of them is a substitute for the others, and the standards themselves say so.

## [Can you fix the random number generator?](http://joshmaxsilverman.github.io/2026-06-22-can-you-fix-the-random-number-generator/)

_2026-06-22 · Jamshrivelson_

Based on your friend's cryptic revelations, what do you expect is the biggest possible number? - Question I think the random number generator on my calculator might be malfunctioning. Oh no! Under normal conditions, it should generate random numbers between 0 and 1. But my suspicion is that the calculator is “tanked,” meaning it only generates random numbers between 0 and some value $0 \< a...

## Delight in the Lord | Psalm 37

_2026-06-21 · RADIUS Church Sermons_

[Listen](https://t.subsplash.com/r/aHR0cHM6Ly9jZG4uc3Vic3BsYXNoLmNvbS9hdWRpb3MvOFBOQzY1L2UyMjY0M2IzLWUyZTAtNDFhYi1iN2Y4LTJjYmU1ZmVhNmJiMy9hdWRpby5tcDM.mp3?k=8PNC65&s=3&sapid=whd42sq)

## [Rendering Agent Plans Into Something I Can Actually Review](https://www.arnaudp.dev/rendering-agent-plans-into-something-i-can-actually-review/)

_2026-06-17 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

Claude Code plan review falls apart in chat scrollback. Why I render every implementation plan as a browser page I can navigate, mark, and annotate.

## [What Makes a Good Foothold in AWS?](https://hackaws.cloud/blog/what-makes-a-good-foothold-in-aws)

_2026-06-15 · hackaws.cloud Blog_

An AWS security assessment is only as useful as the foothold it starts from. Pick the wrong starting identity and you get a graph of paths nobody would ever walk. Pick the right one and you get the breach an attacker would actually run. Here's what to look for.

## God the Forgiver | Psalm 51 and 2 Samuel 11

_2026-06-14 · RADIUS Church Sermons_

[Listen](https://t.subsplash.com/r/aHR0cHM6Ly9jZG4uc3Vic3BsYXNoLmNvbS9hdWRpb3MvOFBOQzY1LzAzZDFiY2E3LTljODQtNGU4YS05ZWM2LTk0ZDAxNzg4MjRkZi9hdWRpby5tcDM.mp3?k=8PNC65&s=3&sapid=ft65dfh)

## [Terraform Infrastructure Repo: What Belongs (and What Doesn't)](https://www.arnaudp.dev/terraform-infrastructure-repo-what-belongs-and-what-doesnt/)

_2026-06-08 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

A practical guide to Terraform infrastructure repo structure: what belongs, how to split state by blast radius, and what to keep out.

## [Can you spot the sheep?](http://joshmaxsilverman.github.io/2026-06-01-can-you-spot-the-sheep/)

_2026-06-01 · Jamshrivelson_

What's the chance three randomly placed and oriented sheep can all see each other with their sheep eyes? - Question: Two sheep are at two random points inside a square pen. They are munching grass and staring in two random directions. Each sheep has a field of view that’s 180 degrees. What is the probability that they both see each other? Extra Credit: Now, three sheep are at three...

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_2026-05-31 · **Sponsored**_

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## [Claude Code Slash Commands as an Interaction Vocabulary](https://www.arnaudp.dev/claude-code-slash-commands-as-an-interaction-vocabulary/)

_2026-05-23 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

Claude Code custom slash commands as a vocabulary: named modes with output contracts make agent output reproducible.

## [Can you play hide-and-seek?](http://joshmaxsilverman.github.io/2026-05-18-fiddler-hide-and-seek/)

_2026-05-18 · Jamshrivelson_

Minimize the time to find your hiding nephew, or don't, I'm not your dad. - Question: I am playing hide-and-seek with my nephew. I start at point O, whereas my nephew can hide at point A, B or C. I can walk from O to A in 2 minutes, from O to B in 3 minutes, from O to C in 4 minutes, and from...

## [Turning Architecture Into a Prompt Pipeline](https://www.arnaudp.dev/turning-architecture-into-a-prompt-pipeline/)

_2026-05-16 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

How to build a reproducible architecture pipeline with Claude Code slash commands, hard gates, and input chaining. Step-by-step anatomy of one command.

## [Can you drink the “random-ade”?](http://joshmaxsilverman.github.io/2026-05-11-fiddler-randomade/)

_2026-05-11 · Jamshrivelson_

How much will you pour using this deranged protocol? - Question: I’m preparing a mixture of “random-ade” using a large, empty pitcher and two 12-ounce glasses. First, I fill one glass with some amount of lemon juice chosen randomly and uniformly between 0 and 12 ounces. I fill the other glass with some amount of water, also chosen randomly and...

## [Architecture Artifacts in Order: The Missing Handoff Between Discovery, Design, and Delivery](https://www.arnaudp.dev/architecture-artifacts-in-order-the-missing-handoff-between-discovery-design-and-delivery/)

_2026-05-10 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

How to chain event storming, ADRs, C4, and arc42 into a repeatable pipeline where each artifact feeds the next. A practitioner walkthrough with diagrams.

## [Every PaaS Breach Becomes an AWS Breach](https://hackaws.cloud/blog/paas-breaches-become-aws-breaches)

_2026-05-03 · hackaws.cloud Blog_

Vercel's April 2026 breach is the third major PaaS-credential incident in four years. Heroku, CircleCI, and Vercel all followed the same shape: a vendor-side endpoint compromise that ended in customer AWS keys being exported in bulk. The platform changes. The mechanic does not.

## [Why Your SQL Server View Is Slow (And How an Inline TVF Fixes It)](https://www.arnaudp.dev/why-your-sql-server-view-is-slow-and-how-an-inline-tvf-fixes-it/)

_2026-05-02 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

SQL Server views can hide an expensive GROUP BY boundary. Here's the diagnosis and how an inline TVF brought a 3-minute query to 4 seconds.

## [My Agent Can Say No: Spec-Driven Agent Code Review with OpenSpec](https://www.arnaudp.dev/my-agent-can-say-no-spec-driven-agent-code-review-with-openspec/)

_2026-04-25 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

How OpenSpec CLI enables spec-driven agent code review: your agent can decline suggestions that conflict with documented architecture conventions.

## [Have you heard the buzz?](http://joshmaxsilverman.github.io/2026-04-20-have-you-heard-the-buzz/)

_2026-04-20 · Jamshrivelson_

How big is big enough to buzz most of the time? - Question: I recently introduced my children to a game called “Buzz” (also known as “Fizz buzz”). In one particular variant of the game, anytime a number is a multiple of 7 or at least one of its digits is a 7, the player must say “buzz” instead of that number....

## [The Blast Radius Problem: Running Your Coding Agent in YOLO Mode](https://www.arnaudp.dev/the-blast-radius-problem-running-your-coding-agent-in-yolo-mode/)

_2026-04-18 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

Running your coding agent in bypass mode on your laptop is the mistake. A VM with Tailscale and default-deny egress is how you shrink the blast radius.

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## [Production ML Without a Data Science Team](https://www.arnaudp.dev/production-ml-without-a-data-science-team-2/)

_2026-04-11 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

How a martech company shipped production ML with no data science team. Silver layer, AutoML, delta inference, and matchback validation to prove it works.

## [AWS Security Agent Is GA. What It Does and Doesn't Do.](https://hackaws.cloud/blog/aws-security-agent-vs-hackaws-cloud)

_2026-04-06 · hackaws.cloud Blog_

AWS launched its autonomous penetration testing agent. It finds XSS, SQLi, and application-layer vulnerabilities. It doesn't map your IAM blast radius. These are two different problems, and your environment probably has both.

## [Natural-Language Search Over Image Libraries: RAG Architecture](https://www.arnaudp.dev/natural-language-search-over-image-libraries-rag-architecture/)

_2026-04-05 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

How to make thousands of images searchable in plain language without CLIP: RAG architecture using vision at ingest, hybrid search, and custom retrieval glue.

## [AWS Credential Theft Has Been Industrialized](https://hackaws.cloud/blog/aws-credential-harvesting-industrialized)

_2026-04-03 · hackaws.cloud Blog_

766 hosts compromised. 196 sets of AWS credentials stolen. One operator with a search engine for your secrets. The UAT-10608 campaign isn't an outlier. It's the new baseline for how attackers harvest cloud credentials at scale.

## [The Credentials That Live Outside AWS Are the Ones That Get Stolen](https://hackaws.cloud/blog/litellm-teampcp-supply-chain-aws-footholds)

_2026-03-30 · hackaws.cloud Blog_

TeamPCP didn't attack AWS to steal AWS credentials. They compromised a CI pipeline and waited for the credentials to come to them. The campaign that hit Trivy, LiteLLM, and Checkmarx in 8 days reveals something important about where your AWS keys actually rest.

## [Can you pile the primes?](http://joshmaxsilverman.github.io/2026-03-30-can-you-pile-the-primes/)

_2026-03-30 · Jamshrivelson_

Can you send your six children home with the same weight of primes in their number bags? - Question: Suppose you want to make two groups with equal sums using the first $N\_2$ prime numbers. What is the smallest value of $N\_2$ for which you can do this? The answer is three! (Clearly, that wasn’t actually the puzzle.) The first three primes are $2,$ $3,$ and $5,$ and...

## [AWS Keeps Breaking Its Own Trust Boundaries](https://hackaws.cloud/blog/aws-security-bulletins-trust-boundary-pattern)

_2026-03-26 · hackaws.cloud Blog_

We read every AWS security bulletin from the last six months. The recurring theme isn't buffer overflows or cryptographic flaws. It's trust boundary failures that turn minor permissions into full privilege escalation.

## [Can you trace the locus?](http://joshmaxsilverman.github.io/2026-03-23-can-you-trace-the-locus/)

_2026-03-23 · Jamshrivelson_

What area is mapped out by a string on some pegs? - Question: I have a loop of string whose total length is $10.$ I place it around a unit disk (i.e., with radius 1) and pull a point on the string away from the disk until the string is taut, as shown below. I drag this point around the disk in...

## [KEDA Didn't Just Save Us Money. It Saved Our Jobs From Themselves.](https://www.arnaudp.dev/keda-didnt-just-save-us-money-it-saved-our-jobs-from-themselves/)

_2026-03-21 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

How we stopped AKS PDF workers from OOM-crashing using KEDA scale to zero, a dedicated high-memory node pool, and a Postgres queue trigger.

## [93 HackerOne Reports Show the Same AWS Blast Radius Problem](https://hackaws.cloud/blog/ssrf-credential-theft-blast-radius-hackerone)

_2026-03-16 · hackaws.cloud Blog_

We analyzed 1,169 AWS-related HackerOne reports. The dominant pattern: SSRF or leaked credentials become full infrastructure access because nobody measured the blast radius of the compromised identity.

## [Solving AI Sprawl: Using Git Worktrees and ADRs to Govern Parallel Agents](https://www.arnaudp.dev/solving-ai-sprawl-using-git-worktrees-and-adrs-to-govern-parallel-agents-2/)

_2026-03-15 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

How a five-phase AI-assisted SDLC pipeline (SpecKit, Git worktrees, /done, Claude Poll, /fix-pr) enforces architectural discipline at speed without the AI sprawl.

## [Can you or “Cantor” you find the distance?](http://joshmaxsilverman.github.io/2026-03-15-fiddler-cantor-distance/)

_2026-03-15 · Jamshrivelson_

Random geometry from the Cantor distribution - Question: I start with a number line from 0 to 1, and then I remove the middle third. Then I take each of my remaining pieces (the segment from 0 to 1/3 and the segment from 2/3 to 1) and remove their middle thirds. Now I have four segments (from...

## [AWS Finally Gave S3 Buckets Their Own Rooms](https://hackaws.cloud/blog/aws-finally-gave-s3-buckets-their-own-rooms)

_2026-03-14 · hackaws.cloud Blog_

For years, predictable S3 bucket names let attackers squat resources and hijack AWS services. Account-regional namespaces, launched March 2026, eliminate the entire attack class. Here's what changed and what you need to do.

## [The 3D Printer Revival Project](https://neacsu.net/posts/3d_printer/)

_2026-03-09 · Introduction on Eu, Mircea_

Bringing back to life an old 3D printer

## [What the LexisNexis Breach Teaches Us About Blast Radius in AWS](https://hackaws.cloud/blog/blast-radius-lexisnexis-breach)

_2026-03-09 · hackaws.cloud Blog_

A single ECS task role with read access to every secret in the account. The LexisNexis breach is a textbook case of why blast radius validation matters.

## [Two Kinds of Human-in-the-Loop — And Why LangGraph Needs Both](https://www.arnaudp.dev/two-kinds-of-human-in-the-loop-and-why-langgraph-needs-both/)

_2026-03-08 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

Two kinds of HITL interrupts in LangGraph: information gaps (stuck, need data) vs authority gaps (stopped, need approval). Design for both; use interrupt(), never END as pause.

## [The Capital One Breach, Seven Years Later: The Blast Radius Problem That Won't Go Away](https://hackaws.cloud/blog/capital-one-ssrf-imds-blast-radius)

_2026-03-07 · hackaws.cloud Blog_

In 2019, a single SSRF vulnerability turned into 106 million stolen records. AWS shipped IMDSv2. Seven years later, half of EC2 instances still don't enforce it, and attackers have industrialized the technique.

## [Agentic AI Governance: It Fails at System Assumptions](https://www.arnaudp.dev/agentic-ai-governance-it-fails-at-system-assumptions/)

_2026-03-01 · Arnaud Pouppeville · Arnaud Pouppeville Architect’s Notebook_

Agentic AI governance for mission-critical software: a three-tier model, ADR boundaries, and why AI fails at system assumptions, not syntax.

## [Curvature](http://joshmaxsilverman.github.io/2026-02-10-writeup-curvature/)

_2026-02-10 · Jamshrivelson_

Where does it come from, how do we find it? - This note has a few angles on curvature. The first is to compute the curvature tensor, intuitively defined as the difference of repeated covariant derivatives in either order. The second is computing the tangent vector under parallel transport on an arbitrary line of latitude on the sphere. Third, we calculate...

## [All star winning streaks](http://joshmaxsilverman.github.io/2026-02-06-fiddler-all-star-winning-streak/)

_2026-02-06 · Jamshrivelson_

What would be an impressive win streak in a hypothetical new all star game format? - Question: The Fiddler Basketball Association’s All-Star Game consists of two teams: “East” and “West.” Every year these two teams play a game, each with a $50$ percent chance of winning that’s independent of the outcomes of previous years. Many, many years into the future, you look at the most recent...