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Stefan Theil

@stheil.bsky.social
470 followers 204 following 485 posts

Public law, human rights, & constitutions at Cambridge, Fellow of Sidney Sussex College: www.law.cam.ac.uk/people/academic/s-theil/6578 Current research on free expression and doctrinal methods. Book: Towards the Environmental Minimum.

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Reposted by Stefan Theil
UK Constitutional Law Association @ukcla.bsky.social · 22h
Joanna Bell & Hayley J Hooper: Not in my (Constitutional) Backyard: How Not to Speed Up Planning Challenges ukconstitutionallaw.org/2026/10/08/j...
ukconstitutionallaw.org
Joanna Bell & Hayley J Hooper: Not in my (Constitutional) Backyard: How Not to Speed Up Planning Challenges
Important issues of UK constitutional law can arise in the most unusual of places. Some of the most important cases on undergraduate reading lists, for example, concerned disputes about fishing lic…
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Reposted by Stefan Theil
German Embassy London @uk.diplo.de · 03/10/2026
"This morning, Germany is one nation again." This is how BBC Breakfast News reported on German reunification on 3 October 1990.
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Stefan Theil @stheil.bsky.social · 01/10/2026
Yeah, I think it is mostly good with the languages I know, but does struggle with specialist vocabulary - again, you need some knowledge to safely use it.
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Stefan Theil @stheil.bsky.social · 01/10/2026
As long as you know that this is implausible (as we would) and perhaps remember that the UKSC gave judgment in R(Spitalfields) v Tower Hamlets in 2025. If you don't, then you might be actively mislead into believing something that isn't true.
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Stefan Theil @stheil.bsky.social · 01/10/2026
I think you might not be giving yourself (or skills) enough credit. It seems like it is more akin to a muscle, use it or loose it: www.nature.com/articles/d41...
nature.com
Is AI ruining our skills? Early results are in — and they’re not good
Reliance on artificial-intelligence tools degrades the abilities of physicians and software engineers, studies show.
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Stefan Theil @stheil.bsky.social · 01/10/2026
Maybe, we've had access to many frontier and law specific models and I have not had good experiences. Even the ones linked to databases of court decisions were unable to tell me about recent, ie after 2022 cases involving principle of legality, instead insisting there weren't any - pretty damming.
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Stefan Theil @stheil.bsky.social · 01/10/2026
Yeah, I don't know either. Even if it is, wonder if that is a self discipline we can generalise. Will people actually stop at proof reading (many already don't) and do we deskill ourselves into dependency (which the companies hope we will). At a societal level, it may well be a true slippery slope.
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Stefan Theil @stheil.bsky.social · 01/10/2026
It is a much better and more efficient use of my time to just read the document - not to mention the added benefit of learning something along the way. Plus, I have the added assurance that what I take from it is actually the product of my own analysis and not computer driven text prediction.
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Stefan Theil @stheil.bsky.social · 01/10/2026
Appreciate your perspective, as always, but we have clearly had very different experiences. It is sicophantic, reflecting back to me what the prompt suggests; critiques of writing/reasoning are bland and unspecific, sometimes hallucinated, often miss the point and always incomplete. 1/2
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Stefan Theil @stheil.bsky.social · 01/10/2026
I can only speak for my field, and the models I tried: potential areas of application vary too widely. In academic law, it's a joke and actively harmful to students and academics. Those who think they are not actively deskilling themselves by using these tools are in for a rude awakening.
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Stefan Theil @stheil.bsky.social · 01/10/2026
Instead, you get the most likely sequence of words in response to your sequence of words, following the probabilities extracted from underlining training data - everything else happens in your mind. I find it really troubling that people humanise and outsource their thinking to LLMs, esp academics.
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Stefan Theil @stheil.bsky.social · 01/10/2026
It is really important to remember that LLMs are just probalistic text generators, not intelligent entities: they have no concept of reasoning or logic, no thoughts or message to convey to you, they don't analyse or even read anything you give them in any meaningful sense. 1/2
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Reposted by Stefan Theil
Jeremy Letwin @jeremyletwin.bsky.social · 25/09/2026
Happy to see my new article out in the Journal of Environmental Law about the ECtHR’s (@echr.coe.int) approach to environmental rights [open access] academic.oup.com/jel/advance-...
academic.oup.com
What is Strasbourg’s theory of environmental human rights?
Abstract. Although the European Convention on Human Rights (ECHR) contains no explicit environmental right, the Strasbourg Court has gradually come to affo
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Stefan Theil @stheil.bsky.social · 09/09/2026
From someone who knows more about this than either of us do: M Kramer, Rights and Right-Holding: A Philosophical Investigation (OUP, 2024) p. 216-217. I think that makes exactly my point - they are not at cross purposes, Raz's and Hohfeld's conception of rights are in deep conflict.
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Stefan Theil @stheil.bsky.social · 09/09/2026
Yes, but it does in Razian terms - really puzzled why this doesn't seem to land.
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Stefan Theil @stheil.bsky.social · 09/09/2026
Thinking you have isn't the same as doing so successfully. But let's leave it here, I think the thread has out lived its usefulness to us.
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Stefan Theil @stheil.bsky.social · 09/09/2026
Perhaps those things can be reconciled but not easily. Matt is doing interesting stuff here but plenty of it is contested and probably won't be resolved in the space of a bluesky thread. I think with that I'm going to take my leave.
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Stefan Theil @stheil.bsky.social · 09/09/2026
It really isn't. Hohfeld says we only have rights where there are correlative duties on identifiable individuals. Raz says rights exist where A has an interest that is sufficient ground for imposing a duty. Nothing of what you've offered here explains that away. 1/2
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Stefan Theil @stheil.bsky.social · 09/09/2026
Plenty of people seem to think it is more than a semantic difference. Kramer wrote an entire book about it and Hohfeld is typically categorised as offering a non-justoficatory account of rights to Raz's justificatory one. You are welcome to argue none of that matters but that's a contested claim.
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Stefan Theil @stheil.bsky.social · 09/09/2026
From memory, Matt Kramer has also done some work trying to reconcile Hohfeld with Raz but he only succeeds in doing so by droping some (imho) crucial elements from their respective accounts.
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Stefan Theil @stheil.bsky.social · 09/09/2026
It seems that article proceeds from the premise that rights are relational in the Hohfeldian sense. The problem is that this is not true for Raz - rights arise from fundamental interests and therefore exist prior and independently from any duties (something Hohfeld must deny).
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Stefan Theil @stheil.bsky.social · 09/09/2026
I don't think that's right: they're both giving us an account of rights. Hohfeld approaches this in a strictly relational manner, Raz asks whether there is a fundamental human interest. Raz can thus give 'heard before adverse decision' rights status, Hohfeld, by your reckoning, does not.
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Stefan Theil @stheil.bsky.social · 08/09/2026
Or idiosyncratic. Other theories of rights reach different conclusions (eg Raz Interest theory) - so unless we are all Hohfeldian I do not think you can state your claim in such absolute terms.
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Stefan Theil @stheil.bsky.social · 08/09/2026
It can be both? I am not sure how Hohfeld gets you to something like 'hearing before adverse decision' is not a right.
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Stefan Theil @stheil.bsky.social · 08/09/2026
How about procedural fairness, the example Aileen gave: the right to be heard before adverse decisions are made against us. Why is that not a duty on your account?
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Stefan Theil @stheil.bsky.social · 08/09/2026
'Properly so-called' is doing a lot of heavy lifting here.
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Stefan Theil @stheil.bsky.social · 08/09/2026
I think that is question begging.
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Stefan Theil @stheil.bsky.social · 08/09/2026
You say to-may-to, I say to-mah-to. Sure sounds like a duty not to do something unless x applies to me.
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Stefan Theil @stheil.bsky.social · 08/09/2026
Great example - maps on well onto Art 6/13 ECHR procedural rights.
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Stefan Theil @stheil.bsky.social · 08/09/2026
Whether your latter claim is true really depends on what you mean by 'one of the goods'. That can be a fruitful debate, but it is not a foregone conclusion that the common law does not / cannot protect these. 2/2
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Stefan Theil @stheil.bsky.social · 08/09/2026
A unanimous Supreme Court in Miller II would beg to differ, to give just one example. The government was not permitted to advise the King to prorogue Parliament without 'without reasonable justification' based on parliamentary sovereignty. That sounds like a duty to me. 1/2
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Stefan Theil @stheil.bsky.social · 08/09/2026
You claimed the common law creates no specific duties on the state - seems like it does, no?
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Stefan Theil @stheil.bsky.social · 08/09/2026
How does that account for legality, separation of powers, parliamentary sovereignty and a host of other constitutional principles? These are all creatures of the common law (at least in part) and don't make any sense when applied to you and me.
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Reposted by Stefan Theil
Jeremy Letwin @jeremyletwin.bsky.social · 02/09/2026
If you're interested in the environment and human rights, consider coming to our conference at Lancaster Castle on 17-18th September. Registration link here: forms.cloud.microsoft/Pages/Respon...
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Stefan Theil @stheil.bsky.social · 19/08/2026
Nobody has the time to do 200+ vivas, or listen to as many presentations - which is easily what it takes for larger papers. We do a fraction of those numbers for admissions interviews and the whole process still takes about 1-2 weeks of back to back interviews.
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Stefan Theil @stheil.bsky.social · 19/08/2026
Agree but for lost universities it is a staffing and resourcing problem compounded by the dramatic drop in funding. Invigilated, written exams are great but take up more resources than online, viva and presentations take much more time and effort so not viable.
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Stefan Theil @stheil.bsky.social · 15/08/2026
The same attitude: steal as much ip as possible in the hope that it gives your LLM an edge. www.bbc.co.uk/news/article...
bbc.co.uk
Secondhand book sales are booming. Is it because of AI?
Booksellers are reporting mysterious bulk orders. It's thought the books are being used to train AI - and ending up pulped.
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Stefan Theil @stheil.bsky.social · 13/08/2026
I was just pulling your leg - I hope that the taste at least was satisfying?
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Stefan Theil @stheil.bsky.social · 13/08/2026
Yes, that's right - although I suppose it is all relative 😅
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Stefan Theil @stheil.bsky.social · 13/08/2026
The much more important question is of course who got bamboozled into buying this overhyped product in the first place? (I think you're supposed to stick it in a grinder).
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Stefan Theil @stheil.bsky.social · 06/08/2026
Interesting. I suppose the same logic applies: it is a probabilistic match between your prompt, input papers and underlining training data. Trouble is, nobody know what parameters influence that metric - and the LLM cannot give reasons that aren't themselves probabilisticly generated (so useless).
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Stefan Theil @stheil.bsky.social · 05/08/2026
It doesn't have a independent metric for quality, it just probabilisticly responds to input. Because you know it's a bad piece you can push it to more closely approximating an "accurate" score - you would be none the wiser if you weren't an expert. That makes LLM use so hazardous for society. 2/2
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Stefan Theil @stheil.bsky.social · 05/08/2026
That's precisely the problem: the LLM just tells you what it reckons you want to hear. It will respond to you suggesting overlooked "negative" elements by lowering assessed quality. I am almost certain you would have achieved the opposite effect by focusing on overlooked "positive" elements. 1/2
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Stefan Theil @stheil.bsky.social · 02/08/2026
If we cannot discipline ourselves in academia as established academics then we're doomed. We're incredibly privileged to get paid to think, that's a responsibility (and an expectation) we have to meet.
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Stefan Theil @stheil.bsky.social · 02/08/2026
It might be a force multiplier, for sure. My point is that even if it is, we shouldn't use it. More work and more 'thinking' isn't better work or thinking. Especially when slop and the mondane are omnipresent, we need to insist on the slow and careful thinking that we're actually good at.
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Stefan Theil @stheil.bsky.social · 02/08/2026
Spell check is fine because I have already picked. But letting an LLM write an abstract for a paper, or even clarify/make more concise the wording in a sentence is not: unclear, waffly sentences are what tell me that I haven't fully understood/thought something through yet. The thinking isn't done.
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Stefan Theil @stheil.bsky.social · 02/08/2026
Agree, but don't think we need to get hung up on labels: AI is a misnomer (marketing gimic) anyway. We should reject tech that edits the physical manifestation of our thoughts: writing *is* thinking. I wouldn't let it edit my work because it is through editing that I think things through.
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Stefan Theil @stheil.bsky.social · 02/08/2026
I don't think neat distinctions exist in this space: it is incredibly risky to let AI into any part of your thinking and writing process. The slop affects everything it touches and actively de-skills even experts. Just don't use it.
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Stefan Theil @stheil.bsky.social · 01/08/2026
That seems unduly pessimistic. It really depends on what one wants to codify and for what purpose. There is a strong argument that the further devolution moves towards federalism, the more necessary a clear deliniation of legislative powers and judicial oversight becomes.
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Stefan Theil @stheil.bsky.social · 30/07/2026
They have no legal power to deny troop movements. This is about the possibility that they'll drag their feet on something they're legally required to facilitate. "(...) eine Ad-Landesregierung [sei] zwar nicht in der Lage, die Umsetzung des Operationsplans Deutschland zu verhindern."
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