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Claude Fable is relentlessly proactive

simonwillison.net

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Re: Claude Fable is relentlessly proactive

#472

Obviously security is the bigger issue, but reading through this, all I could think about was how many tokens it must have spent doing all that to fix 2 lines of CSS

It’s simple: if you have to fix 2 lines of CSS you should definitely not use Fable. Only use it for complex and long running tasks :)

I don't think it's that simple. (I generally agree with you; I just that that oversimplifies.)

Another model might have used fewer tokens, but come up with a fix that was 1000 lines when the right fix was only 2 lines.

Re: Claude Fable is relentlessly proactive

#474
post #446

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It's like saying you can learn so much about math from using SymPy to solve equations. Yes, you probably can. If you pay close attention to what is happening and can integrate the techniques being used into your knowledge. But your learnings here are what, a handful of hacks? For most people it's like being shown the chain rule (which frankly, is more general than any of these learnings) without knowing what a deriva…

> I think people with a rosy view about this are severely undercounting the problems associated with the trust relationship between a person and an LLM and what that means. Personally I think the impact of LLMs on children's education is a crisis right now. Kids are not going to learn to write if an LLM writes their essays for them. And writing is how you learn to think.

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Re: Claude Fable is relentlessly proactive

#475
post #395

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>> he would have learned nothing about the AI there is absolutely zero value in spending time to learn about new models as in few months new model will be out and whatever you learned about the current one will be useless. Also with models getting better and better you have to know less and less to achieve same results.

My experience has been the exact opposite. As the models get better you need to know more about their capabilities, because otherwise you risk prompting Claude Fable 5 like it's GPT-4o and complaining loudly about how it's all hype and nothing about these models is improving at all (yes, I do see people say that.) Getting the best results out of these models requires skill, experience, intuition, and domain expertise…

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Re: Claude Fable is relentlessly proactive

#476

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No its much more straightforward, but I get it - there is no warm fuzzy feeling of discovering yet another global evil conspiracy out there set to get all of us. We are family of 4 with 2 small kids. Whenever we travel, its a series of backpacks, other bags, other stuff, and then some more. Heck, even if I travel alone its almost never just me - there are heaps of garbage to dispose, big shopping bags to bring back,…

Switzerland does have roads choked full of cars. It also has pretty mediocre bike infrastructure. But this is kind of besides the point - even in the Netherlands I also would use a car if I were taking camping and skiing gear with the kids, and that's fine. But I can also take them in the bakfiets to the grocery store when I want, and that's also fine. Cars have their purpose, but you shouldn't _have_ to use one for…

Well, here is where we differ - what is basic trip for you may not be basic trip for me or next Joe. Maybe they don't even have walking path to their house. Maybe closest grocery store is 5km away on roads which are incompatible with safe cycling (many parents don't give a fck and just ride, throwing a tiny little dice with every truck passing centimeters from them and their young kids at high speed). Maybe XYZ.

Don't judge others in some complex situation just because in your case there is some simple straightforward solution. Yes Netherland has top notch cycling infra but thats nowhere else to be seen and won't be seen for quite some time. And don't force your solution unto everybody regardless on fit, that doesn't work long term (aka EU approach to things or why much of eastern part hates it).

Re: Claude Fable is relentlessly proactive

#477

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Not sure what point you wanted to make, but this calculator is quite shocking. GPT 5.5 pro, with "a long document" and 10 requests a day gives 25% of daily CO2 emissions! Ten coding sessions a day with Opus is still 4.7%! This feels enormous. I will definitely stop rolling my eyes when people complain about AI CO/water usage...

What are you on about? May be 1 out of 100,000 users are using 5.5 Pro to make 10 "Long Documents" as defined in that tool EVERY day. What a silly thing to harp on. Six 100,000 token Claude coding sessions use less energy than a dryer load, and less water than making one egg . If you are truly concerned about energy and water usage, AI is not even in the top 100 things you should be concerned about in your daily life…

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Re: Claude Fable is relentlessly proactive

#478

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Isn't Not Just Bikes some US expat/biking maximalist? I'm not sure I'd take him as some neutral authority on the history of cars and driving in Europe.

> Isn't Not Just Bikes some US expat/biking maximalist? According to their videos, they prefer trams within cities; generally take trains between cities; and acknowledge that cars are very useful for places which aren't so well connected (e.g. places that are far apart which aren't on a train line). They think encouraging the use of cars within cities is a bad idea (dangerous, scales poorly, makes those areas less pl…

I wasn't very familiar with the channel, sorry.

Not US expat either (or not yet), Canadian.

Re: Claude Fable is relentlessly proactive

#479

Earlier quoted context omitted.

I'm actually very happy about this. Babysitting the agent just in case it needs me to do something is a terrible use of my time. I've always had to be very explicit about the various ways that it can get an automated feedback loop going to check its work, and now Fable doesn't even need that hand holding. Really great improvement all around.

Have you ever wondered this would end up costing more than a competent offshore developer with more frugal harness/model?

You still need a competent developer for the prompting, planning, etc. But once it's running, I want to avoid mental context switches and just have it run

Giving it access to a cheap human who is just there to take screenshots, do QA, give UX feedback sounds like a good idea in principle. It's non-trivial to set up, but I wouldn't be surprised if some companies this becomes a thing. The return of the QA department, just that they now get to do the agent's bidding in addition to checking if the results work

Re: Claude Fable is relentlessly proactive

#480
post #467
post #393

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Things I learned from this: - Fable will do a whole lot more than you might expect in order to verify a fix. I learned that it's "relentlessly proactive". That's a good title for a blog entry! - You can take screenshots of a window in macOS using the "screencapture" CLI command, but you'll need the integer window ID first. - That windowID is accessible via "Quartz.CGWindowListCopyWindowInfo(Quartz.kCGWindowListOption…

It was only pursuing the goal you gave it - Keep Summer Safe.

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