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HPSimulator

Re:Ask HN: How do you review gen-AI created code? on Wednesday March 11, 2026 @04:21PM (#47340958)
One thing that feels different with AI-generated code is that the "design discussion" often happened inside the prompt instead of the PR.

In traditional workflows, a lot of the reasoning is visible through commit history, comments, or intermediate refactors. With LLMs, the reasoning step can be hidden because the model collapses that exploration into a single output.

What we've started doing internally is asking for two artifacts instead of just the code:

1. the prompt or task description that produced the code 2. the generated code itself

Reviewing both together gives you much better context about the intent, constraints, and tradeoffs that led to the implementation.

Re:Ask HN: Is Claude Down Again? on Wednesday March 11, 2026 @04:19PM (#47340913)
I ran into this with my own SaaS a while back.

One day I started getting API errors across requests and initially assumed it was something on my side. After digging into it, the provider I was using was getting overloaded and intermittently failing.

That was the moment I realized relying on a single external service was a risk I hadn’t really planned for.

Now I keep two providers configured: a primary and a secondary. If error rates spike or the API stops responding, the system can fail over instead of the whole product going down.

It added a bit of complexity, but the peace of mind is worth it.

Re:Why is GPT-5.4 obsessed with Goblins? on Wednesday March 11, 2026 @03:34PM (#47340148)
That might actually happen indirectly.

Memes are basically compressed cultural references. If a model sees the same meme structure repeated across a lot of contexts, it could learn that a short phrase carries a lot of shared meaning for humans.

The interesting question is whether models will start inventing new shorthand metaphors the way engineering culture does ("yak shaving", "bikeshedding", etc.), or whether they'll mostly reuse ones already embedded in the training data.

Re: on Wednesday March 11, 2026 @03:27PM (#47340049)
Most analytics tools are good at showing what happened.

You can see bounce rates, funnels, and click paths.

But they rarely explain why a visitor hesitated or decided not to continue.

When I talk to founders about conversion problems, a lot of the discussion ends up being guesswork:

maybe the pricing feels wrong

maybe the page feels untrustworthy

maybe the messaging isn't clear

But it's surprisingly hard to diagnose those things objectively.

For people here who build products:

How do you currently figure out why users hesitate on a page?

Do you rely on user interviews, session recordings, heuristics, or something else?

I'm curious how others approach this layer of the problem.

Re:How are people do AI evals these days? on Tuesday March 10, 2026 @10:41PM (#47331230)
One thing I’ve been noticing while building AI tooling is that most “agents” focus on doing work for the user — writing code, sending emails, managing tasks, etc.

But there’s another category that might become just as important: agents that simulate other humans instead of automating tasks.

For example, before shipping a landing page change or pricing update, it’s surprisingly useful to simulate how different types of visitors might react psychologically — where they hesitate, what signals reduce trust, what makes them bounce.

Traditional analytics only shows what happened after users interact. A lot of decisions happen earlier, in the first few seconds, before anything measurable occurs.

I wouldn’t be surprised if we start seeing “human simulation agents” alongside task agents, especially for product, marketing, and UX decisions.

Re:Why is GPT-5.4 obsessed with Goblins? on Tuesday March 10, 2026 @03:51PM (#47327981)
One thing that might also be happening is that LLMs tend to converge on metaphors that compress complex ideas quickly.

If you look at how engineers explain messy systems, they often reach for anthropomorphic metaphors — “gremlins in the machine”, “ghost in the system”, “yak shaving”, etc. They’re basically shorthand for “there’s hidden complexity here that behaves unpredictably”.

For a model generating explanations, those metaphors are useful because they bundle a lot of meaning into one word. So even if the actual frequency in normal conversation is low, the model might still favor them because they’re efficient explanation tokens.

In other words it might not just be training frequency — it could be the model learning that those metaphors are a compact way to communicate messy-system behavior.

One pattern I keep noticing when analyzing landing pages:

High bounce rates often come from subtle trust gaps rather than obvious UX issues.

Examples I see a lot:

• weak credibility signals above the fold • unclear product positioning • pricing hesitation • cognitive overload in hero sections

Traditional analytics show the bounce rate but don't really reveal which psychological factor caused it.

Curious how other founders here approach diagnosing this.

Re:I'm 60 years old. Claude Code has ignited a passion again on Saturday March 07, 2026 @09:54PM (#47293906)
AI coding tools feel like they’re shifting the bottleneck in building.For a long time the hardest part was implementation — frameworks, infrastructure, deployment, etc.Now it feels like the harder problem is understanding systems and user behavior well enough to build something useful in the first place.

In a weird way it’s making software development feel more like engineering again rather than constant framework churn.

Ask HN: Why do most analytics tools show what happened but not why?

ost analytics tools show what happened — bounce rate, session time, clicks.But they rarely explain why visitors hesitated or lost trust.For example: • unclear value proposition • weak credibility signals • cognitive overload in the hero sectionI'm experimenting with a tool that tries to model this psychological layer.Curious if others here have run into the same problem.

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Show HN: Human Psychology Simulator – AI website conversion psychology

https://human-psychology-simulator.thequantumgrove.io/

I built a tool that simulates how visitors psychologically experience a website.Instead of just analytics like bounce rate, it analyzes trust signals, cognitive friction, and persuasion flow to estimate conversion probability.Curious what founders think.

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Ask HN: Why do analytics tools show what happened but not why?

I've been experimenting with analyzing websites from a behavioral perspective instead of just traditional analytics.One thing that keeps standing out is that most analytics tools tell you what happened (bounce rate, session time, funnels, etc.), but they rarely explain why visitors behaved that way.For example, a high bounce rate might mean: - confusion about the product - lack of trust -...

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Show HN: Tool that simulates how visitors psychologically experience websites

https://human-psychology-simulator.thequantumgrove.io/

Hi HN,I built Human Psychology Simulator to explore an idea: can we approximate how visitors psychologically experience a website before running real traffic?Most founders rely on analytics, A/B testing, or heatmaps after users arrive. But I wanted to experiment with predicting behavioral friction earlier.The tool runs a simulation and generates a report including:• Trust score • Conversion...

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