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Chastity Blackwell

@blackisis.bsky.social

SRE in denial and Terraform whisperer.

185 Followers  |  126 Following  |  643 Posts  |  Joined: 06.06.2023
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Posts by Chastity Blackwell (@blackisis.bsky.social)

With code, it's possible to have tests and telemetry enough to have a reasonable degree of non-vibes-based confidence something is correct. The bar for making something that can do the same where the answer is either unknown or very squishy is much higher.

09.03.2026 13:58 — 👍 3    🔁 0    💬 0    📌 0

When you have a machine calibrated to make something as answer-shaped as possible, but not actually do anything to ensure it's a correct answer, that's going to make it easier and easier to build up overconfidence when you start pushing at the edges of your knowledge.

09.03.2026 13:52 — 👍 4    🔁 0    💬 1    📌 0

This is that same problem with the guy who wiped out his Terraform. If you don't know what the right answer *should* be, it's very easy for an LLM to spit out something that is completely plausible (or even correct, but leaving out some important context, in the Terraform case) and have no idea.

09.03.2026 13:49 — 👍 3    🔁 0    💬 1    📌 0

"Unthinkable scenario" to me tells me that JPMorgan Chase probably needs to hire some people who know literally anything about geopolitics or history. Hasn't this been the fear *every* time there has been a crisis with Iran in the last, I don't know, 80 years?

At least it's not unprecedented now!

09.03.2026 11:43 — 👍 1    🔁 0    💬 0    📌 0

Engineers will too, if you actually hold them accountable and/or reward the behavior, but... 🤷‍♀️

09.03.2026 11:09 — 👍 0    🔁 0    💬 0    📌 0

I have a hard time imagining even these morons think that would go over well, but there is no level they won't sink to, so...

08.03.2026 22:56 — 👍 1    🔁 0    💬 0    📌 0

Yeah, I agree. It's just frustrating having people constantly claim to value them and then...clearly not. :P

08.03.2026 22:32 — 👍 1    🔁 0    💬 1    📌 0

This is the big problem for me. If engineers couldn't be bothered to write good docs before, I can't see them being real diligent about being editors. And the less you write the less practice you get at actually writing well.

08.03.2026 22:06 — 👍 1    🔁 0    💬 1    📌 0

For something you don't care that much about, sure, but for something in production? It seems like a good way to get that thing from the other day where you wipe your AWS infra because *you* don't know how Terraform works.

08.03.2026 18:45 — 👍 1    🔁 0    💬 1    📌 0

This seems like it would quickly result in a possibly catastrophic game of telephone. It also doesn't take into account that context does not live entirely in the computer (and never will as long as people are involved somewhere).

08.03.2026 18:33 — 👍 1    🔁 0    💬 1    📌 0
Preview
a woman with long blonde hair is smiling and wearing a white jacket and a pink shirt . Alt: Kristin Bell, a blonde woman in a white jacket, laughing hysterically before devolving into sobs of despair.
08.03.2026 18:01 — 👍 2    🔁 0    💬 0    📌 0

A lot of that is just because the important things about it have nothing to do with the code itself, so it *can't* know unless you tell it. If people did that in the first place, you wouldn't need Claude to.

08.03.2026 17:42 — 👍 1    🔁 0    💬 0    📌 0

This has definitely been my experience. Comments that go into great detail about how a function works, nothing about the context for it. Pages of redundant docs on how basic things function. It may be *correct*, but the stumbling point is making it useful for the intended purpose.

08.03.2026 17:40 — 👍 2    🔁 0    💬 1    📌 0

That is the bitter irony about all of this. Nobody was willing to invest in documenting any of this when it was for people, but now suddenly it's a concern when it's input for an LLM.

08.03.2026 17:16 — 👍 2    🔁 0    💬 1    📌 0

"Our engineers are bad at documentation" Oh, really? When was the last time anyone got promoted for documentation? Or, you know, tons of tech writers who would be happy to have work right now. You get the behavior you reward.

08.03.2026 17:12 — 👍 23    🔁 9    💬 1    📌 0

People saying Claude is better at documentation than humans -- is it though? More verbose, maybe, more diligent at making *something*...if it is better, that sounds like a skill issue. AI docs still have the same not-quite-always-right problem and it is bad at knowing what is important, IME.

08.03.2026 16:32 — 👍 8    🔁 0    💬 3    📌 4

This is 100% what I have found with my own writing. It's also why I find the AI-written LinkedIn post style so annoying, because it's a bunch of short clipped sentences that make me feel like I'm in stop-and-go traffic getting whiplash every 100 ft.

07.03.2026 16:16 — 👍 1    🔁 0    💬 0    📌 0

Yeah, this is pretty much where I am. Especially #2.

07.03.2026 14:04 — 👍 2    🔁 0    💬 0    📌 0

Or I could just link it directly :P @shiftf1podcast.bsky.social

07.03.2026 12:44 — 👍 0    🔁 0    💬 0    📌 0

I cannot speak to it myself, but I know @robzacny.bsky.social of Remap does the Shift+F1 podcast with Drew Scanlon and Danny O'Dwyer; judging by the other podcasts in that orbit I suspect that might be up your alley.

07.03.2026 12:36 — 👍 0    🔁 0    💬 1    📌 0

Thankfully, it's unseasonably warm here in Chicago this weekend. :/

07.03.2026 12:11 — 👍 1    🔁 0    💬 0    📌 0

It feels more like "AI told me I had skis but halfway down the mountain I realized I had left them at the bottom of the hill", but yes.

06.03.2026 17:57 — 👍 2    🔁 0    💬 1    📌 0

Anyway, long story short -- please learn about the tools you want to use, whether you're using an LLM or not. If you don't know how they work, you won't know how they *don't* work, and then you're not going to be able to catch your LLM deciding to nuke your entire AWS account for funsies.

06.03.2026 17:50 — 👍 1    🔁 0    💬 0    📌 0

I mean, you can just do this with Terraform itself. You don't even need a DynamoDB anymore, just an S3 bucket. Like I said later in the thread, I've made similar mistakes in the past, but nothing quite this egregious, simply because I understand the tools, how they work, and the pain points.

06.03.2026 17:41 — 👍 2    🔁 0    💬 1    📌 0

Look, I have to admit that during my less-than-funemployment I've been using Claude and I won't deny it seems to be at a point where *if you know how to use it*, it can provide a lot of utility. But if you do not understand the things you are asking it to do, you are asking for problems like this.

06.03.2026 17:40 — 👍 1    🔁 0    💬 0    📌 0

...a problem, but *why have Claude run the Terraform for you*?!

Is having Claude type "terraform apply" really saving you that much time? And is it really a good idea to just take off the safeties and tell it to go whole hog without confirmation? This is *wild* to me.

06.03.2026 17:37 — 👍 5    🔁 1    💬 1    📌 0

-- you aren't just looking at the map, you're flying through the Alps with the nothing but a map and a compass, but also your map is one of those tourist ones where everything is exaggerated to only show you the interesting parts.

I don't necessarily think using Claude to do your Terraform is...

06.03.2026 17:35 — 👍 4    🔁 1    💬 1    📌 0

...be to *stop what you are doing*. Look at the *territory*, not the map. It's the same reason why I find myself using kubectl most often to do anything with Kubernetes because I'm trying to remove as many abstractions as possible.

The problem here is that Claude is yet another abstraction --

06.03.2026 17:34 — 👍 6    🔁 1    💬 1    📌 0

...have a state. It's Infrastructure *as* Code, but that code is not the infrastructure. When there is disagreement between the code and the infrastructure, *the code is always wrong*. When you see something you don't expect -- like trying to recreate *everything* -- the first instinct should...

06.03.2026 17:32 — 👍 4    🔁 1    💬 1    📌 0

...what feels like a misunderstanding of how Terraform works. I do not know this person's background -- but something I see frequently from people who come out of SWE and not infrastructure is mistaking the map for the territory. Infrastructure is made up of physical things that inherently...

06.03.2026 17:30 — 👍 4    🔁 1    💬 1    📌 0