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Dublin - Metrolink (Swords to Charlemont only)

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Comments

  • Registered Users, Registered Users 2 Posts: 2,188 ✭✭✭Economics101


    Michael McDowell may or may not be right, but he is entitled to ask some serious questions. Personal and rather abusive attacks on him only lead me to believe that the case for Metrolink may be weak. Defend it by all means, but on solid and substantial grounds.



  • Registered Users, Registered Users 2 Posts: 1,121 ✭✭✭riddlinrussell


    People are defending it on solid and substantial grounds. McDowell is primarily complaining about the cost, and the cost he's primarily complaining about is incorrect, being a 95th percentile worst case, nowhere close to the actual construction estimates.

    In addition there is zero evidence that cancelling the project/delaying the project for a review of costs, will do anything but push the costs up as construction costs generally continue to rise year on year, not limited to this project.

    One could reasonably expect a journalist to research the topic they plan to speak about at least a little bit, so two options present themselves, either Mr McDowell hasn't properly researched the Metrolink and therefore his opinion on costs should be discarded and is misinformation as it is based on incorrect assumptions regarding its cost and also about the existing economic conditions that would mean any delays simply exacerbate the cost of the project.

    Or alternatively one could take into account the reporters historical public record with regard to public transport generally and take the view that he is actually a capable journalist who is deliberately misrepresenting the facts for his own ends as he has a history of opposing the "currently in progress major public transport project" in favour of the "not currently in progress, and therefore not likely to be in progress for at least a decade, at which point I'll turn around and oppose it, project"



  • Moderators, Science, Health & Environment Moderators Posts: 20,350 Mod ✭✭✭✭Sam Russell


    I think it is quite the opposite - the case for Metrolink is beyond question.

    McDowell argues the point that Metrolink is too expensive for a link from the airport to city centre. However, Metrolink is a lot more than that. It will provide a rapid way for airport workers to get from the Swords to the airport, and will provide rapid transport for north south city travel with many trip generators en route. It will eventually reach Sandyford and further south.

    To portray as a simple Airport connection is so wrong.



  • Registered Users, Registered Users 2 Posts: 18,844 ✭✭✭✭VinLieger


    But hes not asking questions based in fact, like another poster mentioned hes phrasing metrolink as solely an airport link which is completely misleading, he is also claiming absolutely it will cost 20+ billion while that is a worst case scenario. Finally he has not once publicly admitted to his own personal bias against it ie his rental property, by constantly and intentionally omitting that key detail his entire motive for being against it should be brought into question.

    One of his key reasons he claims for being against is it will only directly serve a small portion of the city and that is unfair to everyone else. This is EXACTLY the same reason he was against the LUAS for which his then solution was to instead build a metro….. yet now hes against the metro and wants more light rail….. see the pattern?



  • Registered Users, Registered Users 2 Posts: 29,293 ✭✭✭✭breezy1985


    Anyone who believes the "case for Metrolink is weak" really isn't worth bothering with.

    It's widely accepted that this is a necessary project.



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  • Registered Users, Registered Users 2 Posts: 14,085 ✭✭✭✭Zebra3


    If only he did ask serious questions instead of lying.



  • Moderators, Science, Health & Environment Moderators Posts: 20,350 Mod ✭✭✭✭Sam Russell


    I would think these elderly IT opinion writers are encouraged to write click bait articles to try to generate interest in the paper as it is slowly loosing relevance. There are quite a few who should be on pensions by now.



  • Registered Users, Registered Users 2 Posts: 30,823 ✭✭✭✭blanch152


    I think we have substantial volumes of documentation prepared by the NTA and presented to ABP to support the case for Metrolink on one side. On the other, despite some good in his past, we have an old man shouting at the moon waving a newspaper article.

    That just about sums it up.



  • Registered Users, Registered Users 2 Posts: 9,990 ✭✭✭cgcsb


    It's as if what we really need is abp to approve this so we can go straight to the JRs ASAP and progress the project to construction stage. The longer this absolute farce rumbles on the worse it'll be



  • Registered Users, Registered Users 2 Posts: 2,361 ✭✭✭KrisW1001


    McDowell is a barrister. He knows very well how to frame an argument. There’s a few tricks that he relies on:

    • Use Scary Numbers. Nobody can dispute that the number is stated in a report, but few will go back and read it, or have the necessary knowledge to interpret what it actually means. By the way, this one works spectacularly well against other barristers, who have to be the most innumerate group of people I’ve ever met (I am not joking here: calculators came out at a hearing when it was proposed that a €320,000 asset was to be split equally).
    • Keep repeating a strawman argument until people start to believe it’s the real issue, then attack it. Here, it’s the idea that we’re spending a fortune on an city-centre to airport link, which is stupid when there’s a perfectly good coach service via the Dublin Tunnel if that’s what you wanted. Ignore the truth: that Metro is primarily being built to solving Dublin’s growth challenges for the next 30-50 years by allowing sustainable development of Swords and North County Dublin.
    • Why eat today when there’ll be jam tomorrow? No point in doing Luas when we’ll have a Metro soon. No point in doing Metro when Luas expansion could get to the airport (and remember, the only point was to get to the airport, right?). While we wait for that Next Big Thing, we’ve nothing, but I’m sure that wasn’t the point… right?
    • Give me perfection or give me nothing. You know the old saying: The best time to plant a tree was fifty years ago, so there’s no point planting one now. The cost is only getting higher the longer we delay this project; by rights we should have done this a decade ago (although try find any evidence of McDowell supporting the thing a decade ago), so surely there’s no point in doing it now.


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  • Registered Users, Registered Users 2 Posts: 7,975 ✭✭✭prunudo


    Haven't been here much lately, but said I'd check in after the media started their hit pieces again. I don't really care what it costs, but the contuined delays and re designs over the years have all contributed to this latest reported cost.

    I've read a saying on here before, and it went something like the best value to build something is yesterday, as it will be cheaper than the cost tomorrow. And it's never a truer word said for Meteolink.



  • Registered Users, Registered Users 2 Posts: 18,844 ✭✭✭✭VinLieger


    On your last point specifically ironically McDowell did actually support a Metro when he was arguing against the Luas way back under the same argument hes using against the metro now that it will only serve some of the population of Dublin and that's not fair. Now he has switched to supporting more light rail instead of a metro so he can continue to claim he is actually in favour of public transport and really he will actually just object to whatever is on the table and claim to be in favour of "other thing".



  • Registered Users, Registered Users 2 Posts: 2,361 ✭✭✭KrisW1001


    Yep, that's also the "wait for jam tomorrow" tactic. Claim there's something better, so we should scrap what we've done so far and start that instead. The result of that is that nothing gets done.



  • Moderators, Sports Moderators Posts: 29,322 Mod ✭✭✭✭Podge_irl


    It's not even a "latest reported cost". It's the same cost estimate from over 2 years ago.



  • Registered Users, Registered Users 2 Posts: 18,844 ✭✭✭✭VinLieger


    Oh absolutely hes fully against any and all public transport investment but he cant openly admit that so he swaps his argument every few years



  • Moderators, Science, Health & Environment Moderators Posts: 20,350 Mod ✭✭✭✭Sam Russell


    Mod: Can we leave this particular IT Opinion writer out of this as his opinion is getting more attention than it deserves.



  • Registered Users, Registered Users 2 Posts: 2,188 ✭✭✭Economics101


    If the documentation from the NTA has been so impressive, why have the costs escalated so much in a relatively short time, at a multiple of general construction inflation? I'm all for a Metro, but not at any cost, espacially when the costs per km seem so high by world standards.



  • Registered Users, Registered Users 2 Posts: 1,121 ✭✭✭riddlinrussell


    Which short amount of time, and which figures are you referring to?

    From previous posts here it seems Metro North had a 3-6 billion estimate in 2011, Metrolink had an 8-12 Billion (ish?) estimate in 2022?

    That doesn't seem particularly crazy for 11 years of inflation and a construction sector that's outpacing the inflation figure significantly?



  • Registered Users, Registered Users 2 Posts: 283 ✭✭Thunder87


    Metrolink was budgeted at around €2.4 billion when it was re-announced in 2015 and €3 billion when the new plan was fully released a couple of years later, and it's halved in length since then with the southern section cancelled yet costs have seemingly quadrupled based on the latest sensible estimates.

    Plugging the figures into an inflation calculator says €3bn in 2018 is the equivalent of €3.8bn today (I know construction inflation has outpaced general inflation but as a rough estimate) so costs do in fact seem to be running out of control.

    I'm all for getting it built as well but the longer the farce rolls on for with no shovels in the ground the more prices will rise and the more noise there'll be about cancelling it



  • Registered Users, Registered Users 2 Posts: 2,188 ✭✭✭Economics101


    General inflation between mid-2011 and 2022 was just unter 15% dumulative.(from CSO). The metrolink estimates you quote show costs more than doubling over the same period. Something similar seems to have happened since 2022.

    If the costs of a project are subject to such huge unexplained revision, then you have to question the case fro the project and the competence of those producing the estimates.



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  • Registered Users, Registered Users 2 Posts: 231 ✭✭Qaanaaq


    Well what is the alternative? Cancel it? If you plan a new alternative it will end up costing more in the long run and we will probably be saying the same things in 20 years time.

    The only idea I can think for the massive cost increases been the fact that it's dragging on way too long and accumulating costs as it goes.



  • Moderators, Sports Moderators Posts: 12,782 Mod ✭✭✭✭Cookiemunster


    Have you actually read any of the last few pages. Costs have not increased since 2022. It's still due to cost circa €10bn. The €23bn figure is the worst possible scenario and that will not happen.



  • Registered Users, Registered Users 2 Posts: 2,361 ✭✭✭KrisW1001


    There’s been no change in estimated cost at all since 2022. An innumerate journalist and an innumerate retired barrister are trying to peddle a story that does not exist.

    Apologies while I take a short diversion into statistical models… I don’t think it’s possible to explain how wrong this story is without a little more knowledge (I apologise in advance for any small errors, but I hope the general gist is right here):

    In a big project, there’s lots of input costs, and they can all vary. While it’s very easy to estimate the price range for any single part of the project, it’s really, really hard to estimate the range for the whole thing, especially as delays in some tasks will cause knock-on delays (and cost) in others.

    To get around this problem, engineers will simulate the project: you make a mathematical model, which includes your estimated cost ranges, and information about how over/underruns effect other parts of the project, and you give it to a computer. The computer runs this model thousands of times, but: each time it runs the model, it chooses a random cost/time for each of the small components of the project (you told it the range of values it can use for each little piece of the project). That gives you thousands of possible final costs, so you’d think you’re more confused than before. But no. Graph the results by how often they show up in your set, and you’ll get something like this:

    It’s obvious that some outcomes are just a lot more likely than others.

    Say you run the simulation 100,000 times. Make a list of every outcome, from cheapest to most expensive, and right in the middle of that list, you’ll find the value that 50,000 of the results are lower than (or equal to), and 50,000 are higher than (or equal to). That’s the median value, or the “50th Percentile” (both of these mean the same thing). You’ll also notice that this is probably the most common answer, and very, very close to the average.

    Because this result has as many results lower than it as higher, your chances of getting a result lower than this if you run the simulation again will be 50/50, 0.5, or 50%. So, this median result is also the P50 value. (P here means “probability”, P0 = never happens, P100 = always happens). For results in a “Normal Distribution”, P-values and Percentiles are the same thing.

    For MetroLink, that P50 value is €9.7 billion. P50 is the “Best estimate”. It’s the value that came out most often in the simulations of the project costs. There’s a 50% chance that the project will be this much, or less.

    But, the simulation also included some very expensive outcomes. That’s where P95 comes in. The P95 value tells you how expensive the thing could be. It’s the cost at which 95% of all simulations produced the same or cheaper result.

    Look at that curve. Notice how the very high and very low items show up rarely. If you pick a point where 95% of the results are to the left of that point, then there’s not a whole lot to the right. For this reason P95 is used as a “worst case scenario” figure. For MetroLink, this “Worst Case” scenario is €22.4 billion

    So, put those on the graph, and you’ll see this:

    Look how unlikely the figures around the P95 point are, compared to the ones around the P50 value.

    Want to know how much MetroLink could cost? Well, assuming the simulation was accurate, then look at the graph. Looks like the range 8-12 billion covers most of the area. And 8-12 billion is the range that’s been communicated.

    The P95 is there as a warning, it tells planners what the worst possible case is.

    What it absolutely is not is an indication of the likely cost. If you think different, I suggest putting your house on a 20-1 shot at Cheltenham.


    (Incidentally, this method of estimation is called the Monte Carlo Method, and it’s used in everything from weather forecasts to stock trading and some types of AI training)



  • Registered Users, Registered Users 2 Posts: 29,293 ✭✭✭✭breezy1985


    There is effectively no real world opposition to this. Just a few media cranks, online curmudgeons and perennially angry types.

    All you hear "on the street" is it's a disgrace that the capital doesn't have a metro like any normal country.



  • Moderators, Computer Games Moderators, Recreation & Hobbies Moderators Posts: 10,738 Mod ✭✭✭✭CatInABox


    Indeed, the last time the Irish Times tried to drum up opposition to the Metrolink project, with this exact same figure, they went to interview people across the country, obviously believing that they'd find that everyone outside of Dublin would be against it.

    Instead they found near universal support for it, even in the depths of the Healy-Rae territory, an area not known for supporting Dublin based projects at all, the person that they interviewed literally said "just get on and build the fecking thing".



  • Registered Users, Registered Users 2 Posts: 18,555 ✭✭✭✭Idbatterim


    A city that will have two million if its built on time or thereabouts. A single metro line to an airport A few km from centre, that will handle forty million plus easily, by the time it opens, even if it were 2035, realistically it will be 45 to 50 million by then and the size swords will be at then too. Totally pathetic... put the money into metrolink, couldn't care less what other areas it doesn't get wasted on...

    Post edited by Idbatterim on


  • Registered Users, Registered Users 2 Posts: 10,716 ✭✭✭✭MJohnston


    I still remember when they did a whole story about a blind man who they framed as having his life ruined by the BusConnects changes. I did some investigating (something the reporter clearly didn't bother his arse doing) and the man's journey would have had less changes under BusConnects, and had more frequent options.

    I haven't trusted a single thing they write since then — there's either an agenda at play (Irish Times of course receiving plenty of revenue from car advertising and from their ownership of MyHome.ie) or just really low journalistic standards.

    I find Dublin Inquirer to be a much more competent outlet, even if they don't have the reach of the so called 'paper of record'



  • Registered Users, Registered Users 2 Posts: 18,555 ✭✭✭✭Idbatterim


    LiLiterally, fine of its 23 billion... its substantially less than the annual hse budget ? Look, after many of us have paid in decades of substantial taxes, I couldn't care less about the loud voices, that contribute nothing... championing the world's largest welfare state... build infrastructure. In the UK they are cutting welfare, do the same here if necessary...



  • Registered Users, Registered Users 2 Posts: 9,990 ✭✭✭cgcsb


    You can see from the social media comments nobody actually cares what it costs just angry that it isn't built already



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  • Registered Users, Registered Users 2 Posts: 2,361 ✭✭✭KrisW1001


    Even at that stupid price, it’d only be 3-4 billion a year or so: the whole thing isn’t paid in one go. At a more realistic estimate, the price would be about 1~1.5 billion a year.

    If you want to see what that means in terms of the whole Government expenditure, there’s a breakdown here: Where Your Money Goes (Spoiler: it would be 2.5~3.3% of total spending at the crazy level, 1% or so at the realistic one)

    And on the subject of spending, click through those headings and you’ll see that the biggest single use of government money every year is… paying the old-age pension. So, anyone complaining about waste on welfare, please ring your ma and tell her she’s a scrounger. And do let us know how it goes, because we could do with a laugh while we wait for ABP to get its finger out on MetroLink.



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