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tomarr

277 karma · joined April 3, 2013

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tomarr··on Thor Electric Truck Will Probably Beat Tesla’s to Market
Whilst true this is also misleading in that road wear is not completely from trafficking, and so the 1400x just looks at the marginal difference. The proportion of wear accountable to your relatively fixed externalities (weather, water, utilities) depends on the type of road and the location. But say if 60% of the wear is due to weather and water, the 1400x factor comes across very misleading.

To put more simply - if you banned semis roads would not last 1400x longer, nowhere near in fact.

tomarr··on Asking members to support journalism, The Guardian raises more revenue than ads
I do normally love to hate on the Guardian, but that is from their 'comment is free' opinion section, rather than the main news site. BBC and many others have these, which are basically just magazine format and of little journalistic value (although to be fair they do not claim to be).
tomarr··on Airbus buys majority stake in Bombardier CSeries passenger jet business
Share price says otherwise!
tomarr··on Deliveroo raises $385M in new funding
A lot of Brazilians (allegedly) come in on fake Portugese documents too
tomarr··on Scott's Cheap Flights: Growing a small side project into a booming business
Have you done much scraping in the past? There's normally a lot more to it when javascript is involved, captcha systems etc.

This is obviously helped recently by the relatively new headless modes for Chrome & Firefox, but before that it was using buggy headless implementations or Selenium. These weren't well suited to operations at scale.

tomarr··on Ask HN: Realised I put in much more work than cofounder. What to do?
There's a big chance the cost of any fallout is going to hit your company harder than any extra % you negotiate.

I know it's not easy if it feels like your partner is not pulling their weight, but your focus should be on making the product a success at this stage. 60% of nothing is worth no more than 50% of nothing.

tomarr··on What works in e-commerce – A meta-analysis of online experiments [pdf]
If you want to see pretty much all the most effective measures in action, go to a ticket reseller like Viagogo and follow something through to the basket. It is both impressive and amazing the amount of psychological steers there are on the site.
tomarr··on Maine Is Drowning in Lobsters
I agree this seems like a meritable solution. But I think this also bears quite close resemblance to how the taxi and medallion system sprung up in many cities, ultimately corrupted by the economic value of being in this exclusive club.
tomarr··on Elon Musk's Boring Company Begins First Tunnel
You're missing the biggest one - evacuation. The reason many tunnels are oversized is to allow walkways for people to evacuate using in an emergency. This drives the size up a fair bit.
tomarr··on DigitalGlobe satellite imagery launch for OpenStreetMap
Most of the EU satellite stuff is open licensed, lookup Sentinel II. Various wavelengths and new data every 5 days (so if it's cloudy you can try again).

It's not the most user-friendly though, you have to download large swathes at a time.

tomarr··on Starting an Internet Service Provider
It's interesting that this is always the american response whenever the broadband comparisons are made. I don't mean this in a negative way, but it's a very persistent argument and I wonder if there's some external factor that pushes it (telcos/media/other).

I think this is definitely a factor - but it's vastly overstated. The USA is more urbanised than many European countries at 80%, so there's definitely quick wins for the vast majority of the population.

The big difference I see is the way these services are regulated. In the UK for example, the physical infrastructure associated with the last mile is owned by a company that just manages this, with regulated prices linked to asset investment required. Services are then resold to Internet Service Providers who provide the IP services and compete on price and other factors.

The capital costs of providing the infrastructure are restrictive and the advantage of competition does not outweigh the cost of having multiple last-mile infra.

Note - I've used some simplifications on the ownership and extents of infraco/telco ownership, but the concept holds.

tomarr··on Considerations on Cost Disease
The UK also has problems with particularly expensive infrastructure projects.

They tend to cost magnitudes more in common law countries (USA, Canada, UK, Australia, NZ. This is generally down to the land and legal costs, with the dispute framework becoming much more expensive. Land and property rights are much more extensively protected in common law countries.

tomarr··on Apple’s UK App Store prices will rise 25% following Brexit currency fluctuations
Not necessarily - the market has priced in multiple future outcomes according to their probability, each which see a massively different valuation of pound sterling. Article 50/hard Brexit/etc. is now very likely (lower pound sterling value), but there’s still the potential of a late change to this approach or a parliament refusal of the bill (higher pound sterling value).
tomarr··on DeepStack: Expert-Level Artificial Intelligence in No-Limit Poker
I don't think this is true? At least for small blinds. If you know your opponent is playing the percentages you could heighten your threshold.
tomarr··on The U.S. Will Surpass China as the No. 1 Country for Manufacturing by 2020
You'd be surprised how negligible the environmental impact of shipping compared to production is. As an extreme example, it's cheaper in terms of CO2e emissions to produce and ship lamb from New Zealand to the United Kingdom than produce it in the UK.
tomarr··on 'All I wanted to do is build a house' (2010)
You are looking at a conflict of the needs of many and the needs of a few (scale). Maybe it is higher quality, but how can an individual inspector assure that without evidence? The reality is housing is often up for 100+ years with ~10 owners. If everyone does their own thing, a significant portion of this will be poor quality housing that damages the quality of life of people in the future, and is too costly to justify rebuilding.

Compare this to individual developers using their own syntax and coding styles across a massive codebase, some of it is inevitably adding in technical debt for the future.

tomarr··on How the Singapore Circle Line rogue train was caught with data
Are you sure this isn’t just the pantograph passing through the neutral section? They have these on long runs where the power is supplied from different sources (resulting in sync issues). There are circuit breakers at these points which on some trains makes a very loud ‘clunk’, which stops the train trying to draw current through . The other type of ‘clunk’ you get on some trains (although not the ones you are describing) is the pant going up/down on combined AC/DC lines.
tomarr··on Satellites Confirm Sinking of San Francisco's Millennium Tower
I'm in a similar line of work and don't fully agree with this. Yes everything he's said is true, but to an extent, and having these rates of settlement per year is very troubling for a structure designed to live 60-100+ years. If the issue is not groundwater related (which seems unlikely with surrounding structures largely OK) then expensive remedial work (underpinning / grouting / similar) is going to be required in the immediate future before this causes serious issues.

Admittedly I don't work in an seismically active region but I design for max settlements of ~50mm over a building's lifetime, and the Millennium Tower is experiencing that every year.

tomarr··on Volkswagen plans 30K job cuts worldwide
Better unless you are an early career worker looking for a job.
tomarr··on Dyson opens Britain’s first degree where students get paid
I would guess the 'gotcha' is it's only a course for 25 people, and more comparable to a scholarship rather than a new model for engineering teaching.

It looks great, and I'm sure it will be a great education for the lucky few, but I am skeptical that it would scale to larger numbers. The incentives are there at the macro level but not the micro which would be needed to encourage a broad range of companies to participate.

tomarr··on What Happened to Eastern Airlines Flight 980?
I've read about this crash (following the recent exploration) before. One thing this article did not really delve into is the 'lizard skins' found. There was a large illicit trade in caiman skins around this time, one that Eastern were believed to be complicit in.

An article from the two explorers goes into this in more detail, and it would seem a reasonable conclusion that it was one of the driving factors of the 'cover up'. Discovery of further illegal smuggling by Eastern Airlines would have likely resulted in bans and embargoes. https://operationthonapa.com/an-international-smuggling-ring...

tomarr··on New Record Low Solar Price in Abu Dhabi – Costs Plunging Faster Than Expected
HVDC is High Voltage DC, therefore grids aren't really important. The bigger issues are losses and costs
tomarr··on The Man Who Invented Intelligent Traffic Control a Century Too Early
Anecdotal but London seems to have a reasonably 'smart' traffic light system. It's something you only really notice when you're looking out for it (sign of a good system?), but as a pedestrian it's very often that pedestrian crossing phases match extended gaps in traffic flow. On roads with a good sightline, I often notice a gap in the flow ~30 seconds away that the lights will change in sync with.

The system is called SCOOT if you are interested.

tomarr··on Why Land and Homes Actually Tend to Be Disappointing Investments
Leverage is the key. Someone could buy a $200k house for $20k of their own money in the form of a deposit for a mortgage. Now say house prices go up 4% a year (so probably less than S&P) for 5 years, while the mortgage interest is 1.5%. So they will have paid in approx $70k, and gained nearly $30k in asset appreciation. That's a 40% return on your cash, and you've not had to pay any rent!
tomarr··on Dissonant tones sound fine to people not raised on Western music
Your statement does not contradict the former - black represents death but death does not necessarily represent black.
tomarr··on World's longest and deepest rail tunnel to open in Switzerland
Looks like you spoke to soon! Five month delay..

http://www.bbc.co.uk/news/uk-scotland-edinburgh-east-fife-36...

tomarr··on Pointscene.com: Explore Real World 3D Scenes from Lidar Data
The UK has too from the Environment Agency, largely undertaken for flooding studies, (apologies for the longform URL):

https://data.gov.uk/data/map-preview?url=http%3A%2F%2Fenviro...

tomarr··on A former CIA spy has revealed his key role in the arrest of Nelson Mandela
I'm British and back staying in the EU, but I think your post is unnecessarily condescending and incorrectly portrays your opinions as facts.

The immigration argument is about EU citizens which the Danish system can do nothing to stop/slow, and stopping the 'free-flow' of EU citizens is most Brexiters biggest desire from the campaign. The economic studies are definitely in Remain's favour, but economics as a field is very 'woolly', often wrong and more importantly does not resonate with a large populace who have seen living standards broadly stagnate since the last prolonged recession.

There are arguments for and against - the Remain camp don't have a satisfactory answer to people who are genuinely concerned over immigration or (albeit discretely) do not like immigration in their surrounding, and the Leave campaign have the consensus on the economic side due to uncertainty over post-Brexit state and agreements.

tomarr··on Warner Music Pays $14M to End 'Happy Birthday' Copyright Lawsuit
Included in that loss may be all future revenues that could be attributed to the 'Happy Birthday' song though, in the form of a write-off of the value of the asset.
tomarr··on Ask HN: Your Passive Income Suggestions?
Any guides or links to get started on this kind of thing?
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