I've been told that acceptable software margins are around 75%. Hardware focused yields closer to 20%-40%. Hence why there is such a strong push towards software-only.

He's in this thread

I fly to germany when I can, or take any other operator's train. I am way, way more familiar with Karlsruhe than I would like to be.

Dropping things is one of the primary purposes of the P-8A. They drop sonar buoys for submarine warfare.

I would put good money on the US Navy already having a map that is superior to this.

For certain parts of the world it's more than a certainty -- I've seen them! (Before my computer career I was a navigator in the US Navy.)

Where we don't yet have hyper-accurate bathymetric data there are boats like the USS Jimmy Carter which have lots of tricks and capabilities that we'll never learn about.

Without divulging anything, as a map enthusiast, are there any public images of maps submariners use to navigate? It is just like bathymetric/contour maps with similar notations? Do they look cool?

I'm going to hazard a guess, by your use of 'map' rather than 'chart', that you're not very familiar with nautical charts. A lot of what they do is chart depths, including broad contours which get more precise in shallower areas and closer to land (not always the same thing). Check out https://fishing-app.gpsnauticalcharts.com/i-boating-fishing-...

Thanks, I've "enjoyed" nautical charts before, not for use, but the design. I just like seeing different kinds of maps/schematics and seeing their symbology or notation. Want to see something for submersible navigation, I imagine it's mostly countrs and depth indicators, but what about stuff like currents, thermocline layers, landmarks... like is there a big geologic underwater arch somewhere that subs pass under for shits and giggles. What do charts show subs that operate at 500m or vehicles designed to deeper. Things like that.

What you're looking at there would suffice as source material whether your keel depth is 30ft or 300, and then many layers of planning happen atop it.

> like is there a big geologic underwater arch somewhere that subs pass under for shits and giggles.

I can't promise there's not, but most naval services have proud traditions of firing captains who are involved in collisions, allisions, and groundings.

It's public knowledge that the US Navy has its own fleet of surveying vessels, concluding that they actually use them as well isn't much of a stretch.

I’ve had no access to classified anything ever and could have told you the US navy has remarkably good maps of several key parts of the ocean in which friendly or enemy boomer subs are likely to operate.

Like, of course they do. If there are any unusually-good ocean maps they have, it’s those, at least.

It's also public knowledge that the USS Jimmy Carter is a "very special" submarine. I have no direct knowledge of what it can do (I was a surface warfare type) but splicing into fiberoptic cables has been rumored many times by many sources.

"Blind Man's Bluff" is a great book about the work of espionage submarines and includes many anecdotes from other boats that were based at Kitsap.

Tapping cables is definitely something that's been done through history, but more of the stories were about things like recovering the remains of enemy test missiles for physical intelligence. Now that that fiber traffic is routinely encrypted anyway, I wouldn't be surprised if more of USS Jimmy Carter's missions are recovering North Korean rockets.

A former Navy Seal heads the org I work in. He’s an expert in telecommunications and fiber tech. I’ve always wondered how he go the job and knows so much about telecom…especially fiber.

The purging has really picked up pace in the last couple of years, and I think a major highlight will be the upcoming cleansing of Place de la Concorde.

Taxis in Australia, like many other places, used to abuse their customers. Uber truly made a difference; these days, Uber may represent questionable value in Australia, but at the very minimum they managed to change the behaviour of an entire industry, which is a huge positive.

I can't say I had lots of experience with taxi in Australia, but after getting cabs on the on the east coast, then moving to Sydney in the late 90s - the difference was amazing. Cabs everywhere, arrived quickly, could pay by card (EFTPOS was pretty new out there then, but seemed heaps better than the UK) - and I could easily get cash back (essentially a cash withdrawal) from the taxi driver when I paid my fare.

I'd rarely got cabs in the UK, but a similar journey in Sydney would be the same in AU$ as it was in GB£ - at the time it was 2 dollars to the pound too.

Have worked at both, Airbus pays worse but has a much better engineering culture. Also arguably, because of the location(s) the quality of the engineers is quite high despite the pay as they can afford a pretty good lifestyle.

Airbus also functions very much like a quasi governmental institution in many parts, so there's less interest in squeezing everything to death to save money.

Finally, Airbus generally has a KISS mindset, and are very conservative w.r.t change in engineering practice and tooling. When I was there we spent way, way, way, way, way more time testing than writing software - and the software was written in a way that any software engineer could walk off the street and understand it.

Oh, and quite low levels of outsourcing in critical software - they save that for things that don't have people's lives on the line.

> the software was written in a way that any software engineer could walk off the street and understand it

Amazing if true. One of the highest achievements in software.

Doesn’t Boeing use infosys? Yea I’d take airbus

HCL was mentioned as a Boeing software outsourcing shop. Not the only India software shop used by Boeing. I recall reading a news story about outsourcing being linked to Boeing sales in India, but there's a pile of news stories about Boeing outsourcing to India, so it's hard to find where and how it started. More recently, Boeing laid off 2000 people in the US and moved those function largely to Tata's BPO. This follows the pattern of how IBM was hollowed-out.

Boeing writes a lot of code in Banagalore iiuc and has an office there right around the corner from Infosys.

What are some of the differences in engineering culture? It’s kind of an opaque term that can mean a lot of different things.

A propos the likeness point, a question to get people's opinions. What is the difference between your skills today which lead to earning potential and an actor's likeness which gives the actor more rights to a continued income stream?

My software engineering skills are more that of a robot and if someone could make many of me, I/we could get a lot more done and that's a good thing. An actor has 1 likeness as their skill so it should be at their discretion. Plenty of overlap between the two situations, but to really replicate my skillset to the point where it could be harnessed outside of my control is a lot more sophisticated than replicating someone's image, voice, mannerisms, etc.

Same reason why the car industry encountered chip shortages, despite there being plenty of chips. They don't want to have to go through the time and expense of re-certifying everything due to all of the red tape. As a result, you end up with the system "that always worked fine".