HNHacker News
TopNewBestAskShowJobs

fwdpropaganda

1,162 karma · joined June 17, 2017

submissionscomments
fwdpropaganda··on Microsoft has sunk a data centre in the sea to investigate energy efficiency
You don't believe demand isn't being constrained in the way I described? So you believe that people are looking at cats on facebook, and stop because they're worried about the environmental impact of facebook's datacenters? You're joking...
fwdpropaganda··on Microsoft has sunk a data centre in the sea to investigate energy efficiency
> I understand that this is just a back-of-the-napkin calculation, but I feel like the heating will have a more noticeable impact on the local environment (think 5km³), rather than considering all of our planet's oceans all at once.

You're not putting all of the planet's datacenters within 5km^3 either. The calculation is fine.

fwdpropaganda··on Microsoft has sunk a data centre in the sea to investigate energy efficiency
> Of course you could argue that the lower cost of this cooling method will create a larger demand for cheaper servers/data storage, which increases net harm, for which I have no answer.

That argument doensn't apply here: demand isn't currently being constrained by us being affraid of the environmental impact of datacenters.

fwdpropaganda··on Microsoft has sunk a data centre in the sea to investigate energy efficiency
> At what point does this become a problem? They're using the naturally cool sea water to regulate the temperature in the container, but that heat needs to go somewhere... it heats the water.

Makes as much sense as the people who think that windfarms will eventually stop the wind, or people who worry that smoking is contributing to global warming.

fwdpropaganda··on Statistical Techniques Data Scientists Need to Master
I object to the comparison entirely. Basic statistical concepts are orders of magnitude more complex than a loop with a couple of ifs.

As a software engineer you CAN'T fail fizzbuzz. Whereas in statistics I can come up with problems that rely only on basics but are still counter-intuitive enough that some practitioners will make mistakes.

fwdpropaganda··on Microsoft Is Said to Have Agreed to Acquire GitHub
Bing is actually quite good. Not as good as Google, but much better than Github.
fwdpropaganda··on Statistical Techniques Data Scientists Need to Master
> When I opened this thread, this was downvoted. I can understand why, it's kinda dismissive of the article. However, I can also understand the frustration and would generally agree.

Although I didn't downvote, I often downvote comments that are negative on knowledge. You know the type. If we're talking about CS they will argue that you don't have to know algorithms and data structures to be a good developer, because you can just go on stackexchange. If we're talking about data, they will argue that knowing what a p-value is useless because the methodology is flawed anyway. If we're talking about knowledge itself they will argue that going to university is a waste of time. And of course, no matter the subject matter, you never need "all that maths".

fwdpropaganda··on The Marshmallow Test: What Does It Really Measure?
> Is that a valid thing to do? If "will power" was a strongly inherited trait, and the theory is that will power leads to increase household income in adult life, then this controlling would remove most of the signal.

I suspect you might misunderstand what "controling for" means.

Suppose you want to predict A (here "increase household income in adult life") using variable X (here "will power"). You do this by regressing A against X. Saying that you "control for Y" (here "income of a child's household") just means that you regress A against both X and Y simultaneously.

What sense does that make? Suppose that you regress A against X and conclude that "X explains some of A" (these are vague terms which I can make more precise if you want) and you hope that your correlation is capturing some narrative of causality. Well, someone could come along and say "yes, A and X are correlated, but actually the causality is Y causes A, and X just happens to be correlated with Y. So you're focusing your study on X when the interesting dynamics is on Y". This is valid criticism.

One way to mitigate that criticism is that you study how A depends on X while controling for Y (i.e. you include both in the regression). The rationale here is that if the result is that "both X and Y explain some of A" and someone makes that previous criticism you can respond "Yes, you're right that Y has some effect on A, but in addition X also has some effect on A, independently of Y. Therefore, X has signal regardless of whatever is going on in the dynamics between A and Y."

So, to answer your question: Yes, it's perfectly valid if you mean "controlling" in the sense that it is used in statistics.

fwdpropaganda··on Apple Looks to Expand Advertising Business with New Network for Apps
Firefox extension to bypass the WSJ and FT firewall.

https://addons.mozilla.org/en-US/firefox/addon/read-ft-wsj/

fwdpropaganda··on The Overprotected American Child
https://addons.mozilla.org/en-US/firefox/addon/read-ft-wsj/

Firefox extension to read FT and WSJ.

fwdpropaganda··on OpenDUNE – An open-source recreation of the game Dune II
I have the sneaking suspicion that if they'd remake ONLY the graphics, you'd hate it. The reason is that those hold games usually have horrendous gameplay/controls. You kind of accept it because they look old. But if they didn't, I think you'd notice it.
fwdpropaganda··on Visa card network crashes, causing increased decline rates across UK and Europe
See, if only Visa would be running on the blockchain, none of this would happen /s
fwdpropaganda··on Mozilla Project Fusion: Tor Integration into Firefox
> How many more "super private browsing mode" Firefox users will there be? Potentially hundreds of millions of daily users.

Tor has hundreds of millions of daily users?

fwdpropaganda··on Trump wants a total ban on German luxury car imports
That was a perfectly valid and factually correct observation. HN downvotes are getting a bit ridiculous. You can't say anything, you'll get downvoted. I really really don't understand this. And it seems to be getting worse.
fwdpropaganda··on How to get rich without getting lucky
I guess you didn't read until the end.

> When you're finally wealthy, you'll realize that it wasn't what you were seeking in the first place. But that's for another day.

fwdpropaganda··on Buffett Proposed $3 Billion Uber Investment But Deal Crumbled
Ok, care to explain the math to me then? You sound like you know something I don't.
fwdpropaganda··on Trump wants a total ban on German luxury car imports
And saying that he's gonna exclude ZTE from US-Iran sanctions because that would cost China a lot of jobs. Is that consistency on trade as well? Did he run on China first policy?
fwdpropaganda··on Buffett Proposed $3 Billion Uber Investment But Deal Crumbled
There's no barrier to entry.

Some people claim that there is a barrier to entry which is that "Uber has all the drivers". However every big city I go you see local players. Not only Lyft and Yandex, but regular cabs, or regular cabs dispatched by an app (as opposed to telephone) etc.

No barrier to entry.

fwdpropaganda··on Buffett Proposed $3 Billion Uber Investment But Deal Crumbled
He wouldn't go for "pure value investing" even when he started. He started first with all sorts of arbitrage plays, and later on he put together a partnership where he used his investor's capital to acquire a controling stake in companies and then sell them off (what nowadays is called an activist investor, like Bill Ackman).

The folksy pure value investor that we know today didn't appear until much later, in the mid 1970s. To be fair though, this is what made him the most money.

fwdpropaganda··on Buffett Proposed $3 Billion Uber Investment But Deal Crumbled
> For example Uber, they own few vehicles, have few employees, and no exclusivity. How do you run a fundamentals analysis on that? A lot of traditional models would tell you that company is worth near nothing.

Don't forget almost no barrier to entry. It's relatively easy to go from nothing to be a local player dispatching cars in a small neighborhood which your friends drive.

fwdpropaganda··on Buffett Proposed $3 Billion Uber Investment But Deal Crumbled
How is it possible that Uber has $6.5bn in cash? Weren't they losing almost $4bn a year?
fwdpropaganda··on So Your Startup Received the Nightmare GDPR Letter
> Don't care about that sphere of activity, never going to do any of theses.

> Can you be more precise? What are the laws about that and should'nt it be Paypal job to support that? Never wanted to compete with Paypal either..

So what you're saying is you couldn't care less unless it affects you. Got it.

This is part of my point though. You're a perfect example of what I'm talking about. Who the hell doesn't know about KYC? You just woke up to the world and realized "oh shit, regulations exist! Unacceptable!". Yes, regulations exist, and this is just another one.

> Data is literally everywhere... that means GDPR apply to almost everything.

This isn't about data, it's about PII. And PII isn't everywhere, unless you're collecting it.

> Which is why you may see some people complains about being able to sell guns online but you will see much more people complains about GDPR.

No, that's not why. The reason why is that one has been around for a long time and people got used to it.

fwdpropaganda··on So Your Startup Received the Nightmare GDPR Letter
> I feel like I have a pretty clear idea of the rules in the cases you describe. For GDPR I have no such confidence.

I seems reasonable, but I would argue it's due to the law being new, not to some intrinsic property of it, no?

fwdpropaganda··on Pushing the Limits of IPFS and OrbitDB
Thank you.

It's a bit sad that you require a whole new client. I think that will add enormous friciton to adoption, no?

fwdpropaganda··on Pushing the Limits of IPFS and OrbitDB
So sort of an intermediary between how the internet works these days, and how it should work in IPFS view.

Does the "deliverying JS to browser" thing that I described make sense at all?

fwdpropaganda··on So Your Startup Received the Nightmare GDPR Letter
> What other laws (...)

You can't sell guns and drugs online.

If you're taking money, you have to make sure you know your customer (KYC).

I would also like to hear other examples.

fwdpropaganda··on Pushing the Limits of IPFS and OrbitDB
Can anyone be bothered to explain to me how this works?

I know that IPFS is some sort of distributed content-addressable thingy. So I expected that ipfs.io would deliver some JS to my browser, which would get it to look-up some distributed hash table in order to find peers with the content (a la torrents).

However I'm not running JS and that page loads just fine. So how does it work?

fwdpropaganda··on Linus Tech Tips critize Nest Cams, video does not appear in subscriptions
Video isn't stupid. It's good work. For keeping hardware/software free.
fwdpropaganda··on Ask HN: What interesting thought did you read on HN but couldn't find later?
> I think you're working too hard with the semantics here. Parents, as in, who ever the hell takes care of the kid the most.

I didn't mean we don't learn that much from parents versus who the hell takes care of the kids (that would be semantics). I meant that we don't learn that much from parents versus all the other people that you interact with throughout your life.

> And technically elephants do communicate, both vocally and through body language. As do most mammals. Just no where near the sophistication we can.

Right, that's why I said that the crucial point was not communication with parents (or who ever the hell takes care of the kid), but communication. If you happen to belong to a species that has difficulty communicating you will never learn much from anyone, regardless of which age your parents die.

fwdpropaganda··on Ask HN: What interesting thought did you read on HN but couldn't find later?
But you didn't have to learn language from parents specifically, you could've leart it from other members of the society.

I was making the distinction between learning from parents and learning from "others". The argument around the mistmatch between the life time of parents compared to the time of the offspring to maturity only makes sense with parents.

> The octopus' parents die before they can transfer that skill. Hence, they can (barely) communicate with others of the same species and elevate their collective knowledge.

Yeah, but that can't be an important factor. Elephant parents hang around for long and you still don't see talking elephants.

← PreviousPage 4 of 23Next →