Turlough Downes

Turlough Downes

@tdownes.bsky.social

Full Prof of Astro & Maths, DCU. Star formation, plasmas, mathematical & computational modeling. Head of School of Mathematical Sciences. Views my own.

354 Followers 240 Following 709 Posts Joined Nov 2024
10 hours ago

Lovely thread on a particular piece of weak work published by Nature.

Research will be better off when we stop automatically ascribing high quality to Nature papers. Some are good and, in my field at least, some are very poor and ill-thought out. At its core Nature is more a magazine than a journal

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4 days ago

Ah yes, I agree that's the mechanism. It doesn't alter the fact that they can't spell or capitalise his name correctly, even though it is a valid name of someone born *in the UK*.

[At least they didn't just anglicise it to death though!]

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4 days ago

100%. Sometimes that will involve the private sector, sometimes it won't: whatever works. As you say, the key is to be outcomes focused. Right now we are process-focused (i.e. the primary goal is to involve the private sector).

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4 days ago

The US just doesn't seem to want any friends at the moment. It seems really .. grumpy? That's the only word I can think of for it.

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4 days ago

Ah right: yeah ground source is surprisingly expensive. Or maybe it's not surprising - I certainly don't know enough about the challenges. In any case it's hard to make it pay for itself, at least on small scales.

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4 days ago

That much? Hmm. Solar should cost somewhere between 5k and 10k (they're the quotes I have seen recently).

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4 days ago

Surely a zero percent upfront loan covering 100% of the costs is a good way forward, no? Seems quite cheap for the State too.

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4 days ago

And still the legal system of that country can't spell, or even capitalise, his name correctly 🤷‍♂️ There's just such a distance to be travelled in the relations between the British and Ireland.

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6 days ago

Oh I wanna see the data on that one! If the heating energy is the same then it seems odd to use as much energy in an A rated house - you would just be much too warm. Of course cooking/washing will not change with BER. As others have said, solar won't decrease energy usage - just carbon and price.

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6 days ago
Preview
Trump says Iran war is ‘very complete, pretty much’ as economic toll rises President reassures Republicans that conflict is intended to be short lived but also says ‘we haven’t won enough’

Wow. Have the US and Israel really lost this war that quickly?

www.theguardian.com/world/2026/m...

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1 week ago
Preview
Great Britain has only two days of gas stored as Iran war disrupts supplies National Gas insists storage broadly in line with levels for time of year despite disruption for tankers carrying LNG

Thankfully we have a fair amount of wind and some solar insulating us to some extent. But why not get energy independence? We have that possibility, once we decide to have that ambition!

www.theguardian.com/business/202...

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1 week ago
Preview
Opinion: The Dubai dream is over. Irish expats can no longer suspend their disbelief Dubai always demanded expats suspend their disbelief. Now the US military intervention in Iran and Iran’s retribution against Gulf states is forcing some to re-evaluate

Does Ireland have a moral obligation to Irish immigrants (expats is such a racist term) in the middle east? So many are there to avoid paying tax in Ireland, so why do Irish taxpayers need to bail them out? I mean, we do have an obligation, but it's a curious one

www.irishtimes.com/opinion/2026...

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1 week ago

I feel it's more of a US crisis or maybe a US-Israel crisis, no? Certainly leaving the US out of the framing in the headline seems a bit biased @irishtimes.com

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1 week ago

Emmmmm ... globalised markets ... win some, lose some

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1 week ago

Do you mean both of the US carriers? Or some Iranian drone carriers?

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2 weeks ago

Not quite: Irish citizens resident in the UK are also allowed to vote: a quirk of the CTA. British citizens resident in Ireland are allowed to vote in Irish elections also.

Not really sure of the value of those provisions, but they're there.

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2 weeks ago

Well now…

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2 weeks ago

Yeah, sorry, I didn't express myself well. Learning to the test is fine - as long as the test is sufficiently unpredictable.

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2 weeks ago

As things stand most universities do make past papers available (even when I was in college they were available). However, they are set by lecturers so it doesn't quite end up being teaching-to-the-test, but there's a lot of learning-to-the-test.

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3 weeks ago

You mean past papers ought not be available?

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3 weeks ago

I'm interested in knowing other folks' opinion on this: what do you think the pros and cons of universities making past exam papers available to students?

For me: one sample exam paper should be made available, but that's it. It seems to me that anything else encourages studying only to the exam

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3 weeks ago

Nuclear (fission) power is *slow* to get to market. About 20 yrs ago I was in favour of Ireland exploring it, but it's too late for that now.

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3 weeks ago

Nice illustration of the fact that business owners frequently don't know a lot about their market: they know enough to make profit, but that doesn't necessarily mean knowing a lot.

The next time business owners in Dublin complain about plans to make the city nicer we'll hopefully keep this in mind

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3 weeks ago

I totally agree: one cannot solve a problem without clearly stating it. If no one has done that so far, then doing it is clearly a critical contribution to knowledge.

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3 weeks ago
Preview
Lorcan Sirr: If 36,000 new houses were built last year, why were only 58 sold to buyers in Dublin? In reality, we don’t actually know for certain how many houses we’re building

Bringing in a model for building houses that works will upset developers and landowners a lot - a tiny minority of the population. Not bringing in a working model will lose our democracy for us

www.irishtimes.com/opinion/2026...

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3 weeks ago
EAS 2026 European Astronomical Society Annual Meeting 2026

Are you interested in protoplanetary disk substructures and their role in planet formation? Come to our session at the EAS meeting this year! Abstract submission is open until March 2nd! More info: eas.unige.ch/EAS_meeting/...

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3 weeks ago
Reads: Most importantly, there is no AI without massive financial and ideological backing. It is therefore pointless to discuss its techniques or capabilities without asking who controls it, who benefits from it, who builds and deploys it, and what it is doing in the world. As Stafford Beer (2002) argued, the purpose of a system is what it does. Reads: Though less explicit than Thiel’s call to replace politics with technology, major tech firms have effectively privatised core digital public goods. Platforms like Facebook, Google Search, and OpenAI’s ChatGPT operate at infrastructural scale in Ireland, shaping
information, communication, and access to knowledge. Yet their algorithms remain opaque, their governance remains private, with minimal democratic accountability to the public who depend on them; effectively ceding aspects of democratic process to commercial interests.

The monopolization of digital spaces has turned democracy into something the highest bidder can buy and is degrading the digital public goods themselves. As the AI industry, social media and search platforms grow more extractive and less trustworthy, they erode the foundations of democratic life: trust, dialogue, and accountability, blurring the line between truth and falsehood.

An example is the deepfake video falsely showing President Catherine Connolly withdrawing from the presidential race last October, which amassed over 160,0001 Facebook views before being removed.

GenAI’s non-deterministic, stochastic architecture produces plausible output without regard for accuracy or truth.

This makes generative AI a societal disaster and a major threat to truth, democratic processes, information ecosystems, knowledge production, and the social fabric Reads: For truth, democracy, and the rule of law to endure in the AI era, we need to cultivate an ecosystem of transparency and accountability. Yet governance by algorithms inherently places our digital public squares and democratic processes in the hands of those
building these systems in line with their political and profit-seeking agendas. Without real mechanisms in place, talk of transparency and accountability are empty gestures.

An internal Meta memo outlining plans to launch facial recognition in smart glasses “during a dynamic political environment where many civil society groups that we would expect to attack us would have their resources focused on other concerns”5 illustrates how those advocating for accountability are under-resourced, retaliated against, and targeted.

Large tech and AI companies, despite selling promises of innovation and societal benefit, monetize and undermine the very society they claim to serve. What is needed is not just regulation, but active enforcement.

Given the track record of tech giants, stricter regulation and enforcement is not “anti–freedom of speech” or anti-competitiveness. It is one of the clearest ways governments can show they serve the public interest. After all, innovation that disregards truth and democratic processes risks undermining democracy itself.

I appeared as an expert witness before the Joint Committee on AI at the Houses of Oireachtas (parliament of Ireland) to discuss "AI: truth and democracy" this morning. You can read my opening statement here: www.oireachtas.ie/en/publicati...

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1 month ago

The whole debacle in the UK (not Epstein - specifically the fallout) seems relatively unimportant - great entertainment though!

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1 month ago

A very eye-opening follow-up: the account owner openly admits they were posting hateful content simply to develop, and monetise, a big TikTok account bsky.app/profile/jim....

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1 month ago

Thanks for using the image for Ireland (rather than Ireland + Britain): makes it an easier read

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