azylman

6 ms·

1.
The entrepreneur dreaming of a factory of unlimited organs(technologyreview.com)
1 points by azylman 4y ago|0 comments
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by azylman 4y ago
This isn't really true, some languages handle I/O much better than other languages. We migrated a Python application to Go that was about as simple as you can get and mostly blocked by I/O (call DB, transform storage format t
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by azylman 4y ago
There's an important nuance there which is that they don't have to prove that the person knew the actions they were taking were illegal, just that they intended to take those actions. As an example: Knowingly driving a car someone
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by azylman 4y ago
> I mean what is uber processing payments itself too? https://underhood.blog/uber-payments-platform https://underhood.blog/assets/images/uber_payments/overview.... Usually the way these ki
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by azylman 4y ago
You can only run Uber with <100 engineers if you cut out a substantial amount of the systems Uber requires to actually function as a company. Goodbye Fraud, Risk, Safety, Insurance, Compliance, etc. That may be true for things like Whats
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by azylman 4y ago
> Should be max 100 devs and everyone else in sales and support. People with no experience running systems at scale often underestimate the amount of effort required.
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by azylman 4y ago
This is not the case, removing dams still can come with huge benefits to the ecosystems those dams disrupted: https://www.mercurynews.com/2019/05/08/four-years-after-cali...
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by azylman 4y ago
If this still builds a dam, doesn't this have the same environmental concerns as any hydro project? Or is there something that makes this less of a concern?
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by azylman 4y ago
Sourdough is made with yeast
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by azylman 4y ago
Yup, that's a lot closer to the kind of numbers I would have expected. And if you look at peak it's probably at least 10k tps for each of them.
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by azylman 4y ago
That doc is from 2013, so it's pretty out of date.
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by azylman 4y ago
I can pretty confidently say that all of Visa+Mastercard is way more than a few thousand transactions per second, I'm familiar with several companies that push hundreds of transactions per second through Visa+Mastercard and there'
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by azylman 5y ago
DC and LA are both infamous for having bad public transit systems, so don't base all your decisions on your experience there. Within the USA, Chicago is really good - taking the L is way faster than cars because you get to skip road tr
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by azylman 5y ago
That may be the case for LA, I'm not familiar enough with their situation to speak to it, but it isn't the case generally. There are lots of rail lines in the US and globally that have not come anywhere close to maxing track capac
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by azylman 5y ago
> Here in city (Seattle) most people drive because transit tends to be spotty and slow for most people...So, what's the solution? Make driving worse of course. Speedbumps everywhere...Transit still mostly sucks, but now driving suck
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by azylman 5y ago
Building an entirely new bridge isn't going to be cheaper than adding more cars to BART. Even assuming it was (which it wasn't), it's not going to help as much as you think it is. Not sure if you've ever commuted on the
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by azylman 5y ago
Maybe try quoting the entirety of what I said? > Additional highways are at-best a stop-gap for day-to-day traffic, never a solution, due to induced demand [1]. You really need large-scale investments in public transportation for this. C
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by azylman 5y ago
> Here in city (Seattle) most people drive because transit tends to be spotty and slow for most people...So, what's the solution? Make driving worse of course. Speedbumps everywhere. Change 4-lane roads to 2-lanes. Remove parking. L
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by azylman 5y ago
> Sometimes you just need a wider road. Pretending that's never the case is preposterous. If that was true then why do we keep multi-lane highways open instead of closing all but one of the lanes? Wouldn't that improve traffic,
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by azylman 5y ago
Yup, this is a big reason why I said "in most cases" and not "in all cases". When your trains have to go underground and underwater and your highways go over roads and over bridges, that dramatically changes the numbers.
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by azylman 5y ago
It's not correct that cities look at road throughput with no concern for how long that travel takes. The success criteria that city planners use always includes travel times which are impacted substantially by traffic congestion.
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by azylman 5y ago
The way that public transit scales to meet higher demand is different than roads. Whereas roads require more lanes, public transit such as trains can scale by either adding more train cars to existing trains or adding more frequent service.
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by azylman 5y ago
It depends what your success criteria is. It's true, you've successfully increased the throughput of the transit network, but you haven't done anything to improve transit times - you just have more people stuck in traffic now
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by azylman 5y ago
No comments on emergency situations, but wanted to call out one thing: > You need additional highways (aka: additional offramps) to truly scale day-to-day traffic Additional highways are at-best a stop-gap for day-to-day traffic, never a
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by azylman 6y ago
It really depends on the company. Companies like Google and Facebook are very unlikely to hire people at a higher level than their previous level (though certainly it happens). That's easier at smaller companies.
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by azylman 6y ago
"The guy" - the CEOs of both companies? You're essentially stating that the CEOs of Uber any Lyft are lying to their investors, which is a crime. That's a serious accusation and some actual evidence is needed.
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by azylman 6y ago
I'm not saying "trust the management", I'm telling you how an investor would think about it. High spend on marketing can absolutely be justified. Additionally, there's rarely enough public info to allow any investor
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by azylman 6y ago
Yes, companies have ways to do this with a decent amount of precision and accuracy based on existing user behaviors. They can often even be detailed enough to know that LTV differs depending on the channel that the customer was acquired by
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by azylman 6y ago
This is a common misconception I see on HN. To evaluate ad spend, you don't look at just short-term return. There's a reason that "lifetime value" is a critical concept for companies. It's fairly normal in large com
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by azylman 6y ago
This is reflective of the adoption of dice, not the adoption of Go... there are lots companies in NYC that hire engineers to develop in Go (Google and Uber immediately come to mind).

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