DavidWilkinson

Dei here, from the team behind Error Stack [1] (a similarly named existing, context-aware error-handling library for Rust that supports arbitrary attachments). How does Stack Error, here, compare?

[1]: https://crates.io/crates/error-stack

Interesting approach! We had a similar journey at HASH to figuring out how we deal with stacked errors (as well as collecting parallel errors), developed the `error-stack` crate to solve for it. It works by abstracting over the boilerplate needed to stack errors by wrapping errors in a `Report`. Each time you change the context (which is equivalent to wrapping an error) the location is saved as well, with optional spantrace and backtrace support. It also supports supplying additional attachments, to enrich errors. We spent quite a bit of time on the user output, as well (both for `Debug` and `Display`) so hopefully the results are somewhat pleasant to work with and read.

FogBugz was sold off a while ago now. :)

Yes, as a first step we’re planning a WP plugin: https://hash.ai/blog/open-sourcing-hash

Further downstream we hope to be able to work with the Gutenberg team and to contribute more directly.

This is a fair criticism of the public spec in its current form and we’re working on documentation to help folks deal with this.

We actively want to talk approaches through with more interested parties, and welcome contributions to the spec and docs.

Sidebar — for our part at HASH - we’re optimistic about the role WebAssembly might play, having used it extensively in building the wider ecosystem of simulation tooling.

We’ve spent a lot of time thinking and talking to folks about the incentive structures around this, and think they stand on their own - although your skepticism was an initial worry we had, too. As it stands the Block Protocol enables embedding applications to make their products more useful to consumers. And block developers reach a wider audience with their tools than they would otherwise. There’s a lot more to this that we’ll write up nicely later.

Except it turns out that blocks and even block protocols were never actually blocked by the lack of a blockchain

(One of the BP maintainers here)

If you’d be open to exploring this in the context of Notion we’d love to chat: david@hash.ai

Various are interested in making their platforms more extensible (the flip side of content interop).

Introductory guide to various topics in computational economics by Saku Panditharatne, in the browser-based HASH simulation platform (disclaimer: I'm one of the founders of HASH)

Agreed, it's an interesting complement to Codecademy and SimilarWeb

Right you both are. Re: behavior trees, we've explored a few visual programming metaphors (for the most part inspired by TouchDesigner), and I'd love to chat through any specific ideas you have around ideal implementation. I'm at david@hash.ai

The Python simulations we run in-browser are indeed using Pyodide in part! It's brilliant, but there's quite a performance penalty at present. We're working on some optimizations, but right now running the engine locally or offloading to the cloud are the only places real scale can be achieved. That said we're thrilled that Python-in-browser is possible at all, and excited at how many high-quality complementary projects are in the works. It really does feel like "everything is coming together" :)

Joel is Chairman of both Glitch and HASH (also Stack Overflow), and my co-founder Jude was the former CTO at Fog Creek Software, but not beyond that.

Hi there! We're using Auth0's defaults but will happily take a look to see if we can make things a little less onerous for the casual user.

Well that's a fun one... could you email over your username/info to david@hash.ai so we can take a look and see what might have gone on here? Sorry about that!

Hi! Fully appreciate that; we're looking into removing the gate following feedback here (https://news.ycombinator.com/item?id=23573136).

The run and play buttons being distinct are in our mind important in larger sims... but fully appreciate the confusion. We'll give this some more thought. Thanks for your patience and comments!

Thanks! We have some network features in the pipeline (including better viz) and will be introducing some stdlib functions to help in the coming days. :)

We have some users representing networks in the 3D viewer at present, and have seen three ways implementing networks to date:

1. Edges are represented as agents. They are used to store properties such as edge length, and to provide nodes with a way of accessing other nodes.

2. Edges are represented AND USED as agents. Edges not only store properties but themselves exhibit behaviors.

3. Nodes are given a network object which contains information about their network neighbors and all relevant properties (such as directed/undirected edge, edge length, etc...)

Re: your question around experiments... yes to all three (parameter sweeping, Monte Carlo, and sensitivity analysis), and a bunch more. We'll be shipping this alongside H-Cloud. More on that in the full explainer at https://hash.ai/about/mission

Thanks for giving the beta a spin! Happy to chat in more depth over on our public Slack.

Thanks for the feedback; we're going to look at removing the gate. :)

The following paragraph:

> Brilliant innovators have sought to organize the world’s information and make it accessible to all, and the next step on this journey is to make that information understandable and usable to everybody.

Thanks for the feedback! You should be able to view the docs directly without logging in at https://github.com/hashintel/docs

UPDATE: GitHub is down. Of course it is.

I like this interpretation! The original idea related to building a 'hash map for the universe'.

HASH (https://hash.ai/) | New York, NY | ONSITE or REMOTE possible | Platform Engineer

We're a team of a dozen working on an in-browser simulation engine and IDE. We're hiring engineers with deep CS backgrounds and real-world experience solving distributed computing problems.

Our H-CORE engine is written in Rust (compiling to Wasm), TypeScript, and React.

We are Joel Spolsky's new venture, post-Fog Creek (Trello, Stack Overflow, and Glitch).

We're hiring for "smart and gets things done". Resume/CV drop @ https://jobs.lever.co/sohostrategy/d6e31b57-eca1-4f2b-9d07-2...

I think it's fair to say we would have chosen an entirely different architectural approach had it not been for Wasm. Whilst simulations would have run slower, our dev progress would also have taken a hit.

We're big fans and optimistic about its future :)

This is a great example. Relatedly Josh Tobin and team (OpenAI) have done some awesome recent work on how domain randomization can be applied to simulated worlds to improve the generalizability of algorithms as well: https://arxiv.org/abs/1710.06425

This ^^ Our starter models are pretty diverse and span real-world problems like optimizing controlled burns w/r/t wildfire containment, and improving Stack Overflow community dynamics (sorry... not a problem!)

In addition we have several dozen classic ABM toy models such as Boids, Schelling segregation, and Conway's GoL. These individually showcase different components of the system.

Hey Åsmund, all. Tom's got it ^^ In theory you can model all of the above, but simulating complex environments in an agent-based fashion is the initial thing we've focused on creating a really streamlined experience for.

Hey William! Monte Carlo is one experiment type we support. :)

You're half right -- Jude started as an intern at Fog Creek eleven years ago and rose over a decade to become CTO. So technically he once was an intern...

But the startup originated outside of Fog Creek, and Joel's involvement is very much intentional.

David from HASH here. I know that panic all too well...

GAMA is great -- and we're big fans of the team! They've done an awesome job raising the profile, and improving perceptions, of ABM/MAS-type modeling.

We're approaching things in a rather different manner, with a specific view to decreasing the time and complexity involved in building real-world (versus toy) models. We'll be drip-feeding invites (and more info) in the coming days.

Super-gonorrhoea due to antibiotic over-use and treatment non-adherence.

Drug-resistant HIV due to natural mutation and an increase in infection vectors (courtesy PrEP).

Killer venereal diseases: we missed you, but not that much.