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Can’t believe they didn’t mention the cherry (pepperoni?) on top: PepsiCo also got Gorbachev to huck some Pizza Hut for them: https://youtu.be/fgm14D1jHUw


Olive surely?


Hi all! Author here; happy to answer any questions about the OpenTelemetry merger.


I don’t see C++ support mentioned, any particular reason it is ignored?


It's getting started soon: https://github.com/open-telemetry/community/blob/master/comm...

We have a very performant prototype!

One usde case I am excited about: taking the OpenTelemetry C++ SDK, and binding it to the OpenTelemetry interfaces in other languages, such as Ruby and Python.

Some runtimes may see a performance boost by running the observability code independently from the GIL, GC, etc.


Might have been better to just stick with OpenCensus as the name and retire OpenTracing.


Contracts aside there’s a real issue: the human is there primarily to deal with other humans and all the random issues that pop up (which, as a regular bart rider, I assure you are plentiful).

You could shift the model around and maybe have a “station attendant” rather than a “driver,” but it’s an issue that I don’t see addressed in many autonomous conversations. The bus driver doesn’t just drive the bus, they also regulate and deal with all the bullshit happening on and around the bus.

Automation-in-public has so many issues beyond it’s closed-course equivalent, where you simply have to drive the vehicle. It will be a much bigger adjustment than just high quality autopilot.


This gets at my concern though - it is not that we don’t know how to build skyscrapers safely. It is that there is now positive evidence that those construction and engineering techniques are not being applied properly, at least in some cases.

For me, the question is not about whether high quality projects are going to be okay. The question is: on what basis do I believe there has been sufficient oversight to guarantee the soundness of new construction?

I can remember talking to SPUR members in 2001 about how problematic it was to extend downtown development into SOMA, etc, due to liquefaction and uncertainty. When the building craze hit, it felt like it brushed these concerns aside, rather than answer them. Now we have leaning buildings that don’t meet basic construction requirements. It doesn’t inspire a lot of faith.


For those without a WSJ account: http://archive.is/PZ4YB


Yes!! We are very interested in resolving these API differences. In my opinion OpenCensus is great and if it could become the “standard” client for OpenTracing it would make me really happy.


If you’re interested in getting involved, we’re kicking off a documentation overhaul and looking for language maintainers (especially ruby), come say hi in our gitter channel if you’re interested or have any questions! https://gitter.im/opentracing/public


One of the big arguments against public transit is that it's infeasible to dig tunnels. If this project succeeds, I wonder what kind of contorted logic will arise, arguing that digging tunnels for cars is feasible, but digging tunnels for subways is still infeasible?


I thought the reduced diameter needed for cars allows lower cost/faster tunneling. Also, making it for cars solves the "last mile" problem that makes public transit unusable in suburban settings.


Not so sure about that. Some subway tunnels are barely wide enough to fit a single train. I don't think a car tunnel can be much smaller, even if you only allow sedans and somehow find another way to send an ambulance in case of emergency.


I think all the subway tunnels in the U.S., including those in Boston, Chicago, and NYC, are >24 feet in width. The London Underground's deep-level tubes are less than half that at <12 feet in diameter.

That said, I don't think American cities could run subway cars as small as in the London Underground even if they wanted to because of the Americans with Disabilities Act (ADA).

Also, it might be difficult to make cars that small that pass muster under Federal safety regulations. AFAIU, Federal regulations basically require subway cars to be built like tanks.

EDIT: >24 feet just seems too wide for the old, deep tunnels in the U.S., but I can't find any references that aren't from books at the turn of the 20th century, which have very inconsistent numbers. I said >24 because that seem to be the width of old cut-and-cover tunnels and newer deep tunnels. I'm going to go out on a limb--based on random sources--and guess that the really old tunnels still in use might be closer to 16 feet in diameter. Feel free to correct me.


The most expensive part of subway construction - both time and cost - is building the stations...which get significantly more expensive the lower they are underground.

Also modern subway tunnels are typically constructed with a larger diameter than what the Boring company supports.


The problem is, that it's veeeery low density if only a few people sit in one car.

Sure, with increased efficiency and better energy economics, that's not a problem.


Couldn't you just make smaller trains that fit in the same tunnels?

Sure tons of cost for R&D but just because the tunnels are smaller doesn't mean they could only be used for cars in the long term.


That appears to be the intention of sorts. Sleds that hold numerous passengers (8-10?).

You can see one in the CG demo, in the first few seconds of the video, on the right:

https://www.youtube.com/watch?v=u5V_VzRrSBI


also at 0:48


And rewatching the video, I wonder... currently a subway / metro car holds 50-100 people (and there are about 5-7 carriages linked), but subways follow each other at best 3-5 minutes. (Or ~1-2 in Japan in rush hour.)

So about 250 - 700 people are moved in 3 minutes, that's 80-230 per minute. If sleds follow each other by let's say 2-3 seconds, and each car holds 1-8 people, then that's 20-240 people per minute. With the added benefit better granularity, and you don't have to switch lines, metros, you don't even have to leave your seat.


I'm not sure that the person you're responding to is advocating for guns. They are just pointing out that violent people don't stop being violent just because guns are removed from the picture.

For example, handguns and other concealable weapons were almost non-existent in Australia when I was living there. As a side effect, there were a lot of fistfights; far more than I've ever seen at equivalent bars/pubs in the US. That sucked, but I still found it preferable to being shot/mugged at gunpoint.

Likewise, acid attacks are terrible, and there are possibly more of them since guns and knives are less accessible. Doesn't mean that overall things are worse because of the ban.


Indeed, grim as it may be, acid attacks are better than gun crime.


I like Andrew Ng... but multiple upvotes for a placeholder site with no content or explanation? Really?


Brand name recognition is powerful stuff.


Indeed. Once, some unknown underground electronic musician released an album as an "Aphex Twin leaked album".

The album got downloaded and listened to tens of thousands of times before people realized it was a hoax. People really ate it up.

Source: I was one of the people who was fooled.


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