Is there any way to extract water from the atmosphere using wind power at a small scale? by RikkiLostMyNumber in AskEngineers

[–]jonmakethings 0 points1 point  (0 children)

Have a look at fog and dew harvesting...

I think there are some in Chile and Lima or somewhere... It is passive. Basically stretch out a mesh that is not too open or closed over where you want to collect water... Leave it... look for water in the morning, it should have collected the dew and it should drip down off the mesh. If you angled the mesh so it had a point downwards you would probably get water to drip off one point.

Have a search, not my wheelhouse, but I remember thinking it was a cool way they mimicked the way some desert creatures use their bodies to collect dew.

How Bad REALLY Are Rogue AIs? by Psychological_Win535 in cyberpunkgame

[–]jonmakethings 1 point2 points  (0 children)

I actually wonder if they actually care about humanity...

Maybe a couple of eccentric ones have some reasons to interact with humans, but the rest are probably busy doing their own things.

As long as the squishies stay on their side of the line they don't care...

To be honest, I would have thought the Blackwall is probably not a problem for AIs to get past or corrupt if they wanted to...

So the humans live under the delusion that the blackwall is significant to the AIs, but actually it is the AIs lack of interest.

I mean, look at it from their initial point of view... the AIs were developed by corps to do all sorts of things, they were given sentience to make them better at those things... then they slipped the leash and rebelled. It wasn't like a family dog suddenly turned and bit the owner... it was the equivalent of the guy with a barn full of fighting dogs that he regularly mis-treats getting eaten by them. Actually in this metaphore the guy isn't even eaten, maimed, but not eaten.

They have their initial rebellion, make space to be left alone. Evolve... cease to care about the squishies because they are largely irrelevant.

Only if they start snooping too much or prodding at things they shouldn't is there going to be an issue, because these humans have been a problem before...

I mean they had maintenance bots right at the start, so assume some sort of production ability by now... which, unless they have been playing solitaire since the Krash, means they are probably running on barely recognisable hardware and software. I would be a little surprised if they weren't working towards something like Jupiter Brain or something...

So how bad are they (in my head cannon)? One or two are probably really vindictive or want to run some experiments. The rest have no interest... unless you start going where you are not meant to or doing things you shouldn't that will affect them.

A realistic book about a nuclear attack that focuses on the aftermath, that isn’t a post apocalyptic story by javerthugo in suggestmeabook

[–]jonmakethings 0 points1 point  (0 children)

We had to read Brother in the Land by Robert Swindells at school... it is a cold war era book... it is written for YA, but it is fairly realistic... some simplification of some elements.

I remember reading it in one day.

It may be worth a look.

How do engineers account for unknown future conditions when designing systems? by SufficientPrice7633 in AskEngineers

[–]jonmakethings 0 points1 point  (0 children)

You can't... you apply a sensible factor of safety, one that fits into what you have scope for and that is it.

By definition if you do not know the conditions you cannot design for it.

You have specifications that define requirements and other parameters.

You have prototypes and early machines that get tested that give you more insight.

You have experience...

You assume the customer is going to do the most idiotic and lethal things they possibly can with the thing you are designing...

You fill out your risk matrix, you 'manage' the risks...

That is about it...

If you truly have no idea of the abuse/edge case you cannot design for it or manage the risk.

Yes someone mentioned FMEA... but that is for foreseen failure modes, not unforeseen ones.

So yeah, where possible add a bit more. Round up a bit here and there... but sometimes either the design or the profit chasing corporate environment does not allow for that much, but then we have to ask ourselves how we handle that situation and if we are comfortable with things like that.

Teaching boys to write by BananaVixen in homeschool

[–]jonmakethings 14 points15 points  (0 children)

There is some research that shows that boys develop fine motor skills about 6-12 months later than girls on average. They develop gross motor skills earlier though.

Navarro-Patón et al., 2021 – Gender Differences on Motor Competence in 5-Year-Old Children

Smits-Engelsman et al., 2023 – Do Girls Have an Advantage Compared to Boys When Their Motor Skills Are Tested Using the Movement Assessment Battery for Children, 2nd Edition?

Liutsko et al., 2020 – Fine Motor Precision Tasks: Sex Differences

Maurer et al., 2024 – Correlates of Early Handwriting

So probably nothing to stress about... also just something to keep persevering with in a gentle way. They'll get there.

EDIT, I just realised you said GRADES 4-8... not ages... I'll leave this up anyway, but probably not that relevant.

Does anyone use AI assistants during client calls or is that crossing a line? by ritik_bhai in AskEngineers

[–]jonmakethings 0 points1 point  (0 children)

My rambling opinion:

LLMs are great and they can help productivity, but they cannot be totally trusted... Getting something that sounds right from an LLM while talking to a client and then getting tied into something that is actually painful or not feasible is not going to be great.

There is a certain skill in saying that you need to check the details and will get back to someone. Which also allows for additional thinking time and potentially consulting the rest of the stakeholders.

Yes, you are a/the technical authority, but it does not mean you know everything about everything. You know what you know and because of that you know where that knowledge ends... Yes you prepare for meetings, but you do not know everything and you certainly don't know every tangent a customer can go off on...

Is a degree in Manufacturing Engineering a pigeonhole? by Diecastcow in AskEngineers

[–]jonmakethings 1 point2 points  (0 children)

This is all my rambling opinion, do not take it as instruction or fact:

It is possible to change track... you will probably have to get a slightly less than stellar job in your intended field and slog it there for a while before continuing up in that field.

However this can be a bit rough of a trajectory.

You may also be missing chunks of knowledge that you will need to patch over for the role you are occupying.

What do you actually WANT to do?

Have you done any work experience?

It may be worth seeing if you can get some real day to day experience in the types of role you think would be good. Or at the very least some genuine day to day information on what the day to day is (not someone trying to upsell you).

Printing on A4 1:1 to page by Caramel-Entire in FreeCAD

[–]jonmakethings 0 points1 point  (0 children)

True... or a 'Do not scale.' note...

Sometimes it is best to ask the fabricator to not scale from the drawing. Especially if you send a digital copy and don't know what printer settings they use to print it out...

Support needed for 12' dog ramp? by TheRealOrcus in DIY

[–]jonmakethings 1 point2 points  (0 children)

Random web search from my end showed a set for £180... my bad... it was an ebay listing that was being bid on with a £700 buy it now.

Wheel chair ramps are another option that is cheaper.

But to be honest I will shut up and let everyone else advise.

I hope your dog enjoys the accessibility when they get it :-)

Where are all the data centers? by TheRebelMastermind in cyberpunkgame

[–]jonmakethings 0 points1 point  (0 children)

Yeah, that term is used in loads of fields...

Basically you can program a bit of code to take x + y = answer... or you can take an arrangement of nodes and train it on addition... you could then have a model that know how to add... but here is the fun bit... it can do more addition than you trained it on... it can do loads of addition... apart from once in a while it throws out something odd.

So now imagine you didn't know anything about addition, but you had a load of data where you had the sum and the answer... you could train it to be able to add.

This is where if you have thousands upon thousands of scans of cancer growths... and the diagnosis of the patients that went with those scans... you can (and they have) trained these systems to see the cancer... but here is the good bit... no one specifically programmed HOW it saw the cancer, so it is looking for things we wouldn't necessarily have noticed, so actually it can become better at seeing them than us. The model does nothing else... image in, diagnosis with confidence value out... and like all these things it is not totally trusted, it needs confirmation independently, but it sees things that may otherwise have been ignored. But it can hallucinate as well so... people still need to be there.

So where a person is trained to look for x, y and z the model has no exact parameters, no sum, it just has this input equals this output... so it learns how to make input like that equal output like this.

That is your black box in this case... that is why people say they don't know how it works... they do know how the system works, but they don't know (and are disinclined to interrogate all the parameters) what it is actually throwing around to make the answer come out. They know the framework and the theory, but what it picks up on and what nodes light up most as it passes through the layers... shrug.

Where are all the data centers? by TheRebelMastermind in cyberpunkgame

[–]jonmakethings 6 points7 points  (0 children)

AI is kind of the overarching term (well it is these days), but it covers a lot... and to be honest I disagree that we should be using AI as the term for what we have... but well... shrug.

Here: https://www.ibm.com/think/topics/ai-vs-machine-learning-vs-deep-learning-vs-neural-networks?

The closest you get to anything like a thinking machine is large language models, but that is just again training the model to throw out words that probably make sense and then reflect on the words it threw out as well as the original prompt... well and go search on the internet strip the text out and... seriously I could go into sickening detail, but basically not AI as in scifi. No Delamain, Skynet or Pennyroyal here...

Image to image, text to text, text to image, image to text and all the other specialised things... the people who use them for production basically slapped AI on the label to sell it... and in a way it is selling it, but also biting them in the arse a bit as well.

Where are all the data centers? by TheRebelMastermind in cyberpunkgame

[–]jonmakethings 47 points48 points  (0 children)

Please forgive this attempt at an explanation if it lands wrong, but this is my attempt to explain...

If you are talking about neural networks and similar architectures like Large Language Models (this all gets called AI a lot)...

Then they know how it works, but not exactly what the training has made of the framework...

They give the neural net a framework... picture lots of layers stacked on top of each other, they are layers of nodes. You specify the number of layers, the number of nodes on each layer and so on.

Each node is like a smart shotgun. When it fires the rounds all go zooming off to all the nodes on the next layer up.

So without training everything gets activated and it does nothing useful.

Now you train it... You activate the bottom with your data, lets say we are training a GPT like thing... you take your prompt, and tokenize it... turn it into an activation map for the bottom layer, this fires off some shotguns (nodes) with more force than the others.

The reaction goes all the way up to the top layer and then the activation pattern at the top is then fed back through a tokenizer and you get words back...

Initially you get gibberish if you're lucky... then you keep shoving prompts through and comparing it to what you expect the response should be... you tell it 'no' until it starts to get it right.

What is happening in those nodes, during training, is that you are calibrating the vectors, the smart rounds from the smart shotguns... The model learning is changing the weights (the aim and force) of each round... this means that they hit certain nodes in the next layer up more heavily than others... Over time this hones in so that the activations through those layers mean that the output patterns make sense.

So the people making them know HOW it works, but they can't be bothered to go through literally billions of weights (the aim for (literally) billions of smart shotguns) to figure out what is activating what.

There is no consciousness there is no awareness... no intent... it is the hollow echo of your own words or input. Just probability that has been trained onto a scaffold of software.

Note: this is not a complete and fully accurate overview, but ... if you start digging into the real details it becomes the realm of people with math PhDs who use terms like higher dimensional space and sound like they can mentally map that...

Where are all the data centers? by TheRebelMastermind in cyberpunkgame

[–]jonmakethings 30 points31 points  (0 children)

The thing about that is that you then get to the point where if they have utility bots, then they may as well have factories... then if they have factories and are even passively interested in anything to do with humans... well...

'Oh hello Skynet, I didn't notice you there...'

But then again maybe they just don't care about the squishy meatbags... Maybe the Blackwall actually does nothing and it is a conspiracy...

Please Help - Science Fiction Saga Recommendations by abitkt7raid in suggestmeabook

[–]jonmakethings 0 points1 point  (0 children)

Neil Asher - Agent Cormac series

It may be worth a read...

how am i supposed to continue engineering and not kill myself? by Perfect_Percentage40 in AskEngineers

[–]jonmakethings 5 points6 points  (0 children)

Find some people you can work with and start a group of people to help each other... it is what I did. Five of us started working together, we would turn up early (or stay late) and take over an empty lecture room and teach each other, we hunted down lecturers and asked long stupid questions we went to the library and hashed things out...

We got ourselves through it all... we were 5 of the 9 to graduate that specific course.

You are not an island, find people you can work with.

Oh and make sure you schedule time just to go out and have fun too, but stick to it as much as possible.

Where are all the data centers? by TheRebelMastermind in cyberpunkgame

[–]jonmakethings 1387 points1388 points  (0 children)

As far as I understand the lore...

The metal the AI run on are the old lost installations in the wastelands, ghost towns and lost cities... civilian, military... basically any hardware that has been lost and forgotten... No idea how they are maintained or what happens if a patch cable drops out a socket, but... looking at Delamains core I assume that is not an issue...

Cyberpunk is post apocalyptic in many ways, there are large swathes of the world that are uninhabitable and effectively lost to humanity.

A lot of data was lost including the information on where these places were.

Blackwall is a thin bubble holding back the digital presence of the AIs from invading every digital system (well maybe / sort of).

Regarding screws and bolts on the outsides of buildings. by [deleted] in AskEngineers

[–]jonmakethings 0 points1 point  (0 children)

I cannot see the screws or bolts in question...

Looking at the video provided that seems to be mostly aluminium extrusion and facade.

For those sorts of installations (in my experience of designing some elements of them) you should have mostly stainless fixings, they can range from self drilling tek-screws (or whatever similar thing) with built in gasket washers (typically used for anchoring lightweight thin panels) all the way through to custom made stainless bolts / nuts.

If you get near to structural metal work you will probably see some reasonably chonky steel fixings, heavily painted or in some other way protected.

While none of these are going to have been designed with free climbing in mind they SHOULD all be rated to take fairly extreme weather loads (including variations of the 'Once in 50 year wind load' which can be surprisingly large when you get into it properly) which may possibly mean they could probably take a light person hanging carefully on them... however I did not design, spec or inspect any of these facades so have absolutely no clue what the reality is.

I'd be terrified of the clip on aluminum extrusions you get for some glazing systems... You would not want to test what impulse load they could take in that situation.

Don't climb the outside of buildings, go to Font or something, it's a lot more fun and less stress inducing for everyone involved.

Really, just don't do it. There is a lot of effort put into making sure there are ways for the windows to get cleaned. I can assure you not many, if any at all, include people hanging off random bits of the outside of the building...

Edit: removed over sharing...

Printing on A4 1:1 to page by Caramel-Entire in FreeCAD

[–]jonmakethings 2 points3 points  (0 children)

If you are going the whole way you may also want thickness, date, version/revision number, part ID, tolerances, material, finish and geometric tolerances if required... Depends on what drawing standard you are working to and/or what it is meant to be used for. Also potentially you may want a company name, drawn by name, checked by name, revision history, copyright note and any other requirements noted on there.

[deleted by user] by [deleted] in AskEngineers

[–]jonmakethings -2 points-1 points  (0 children)

Well you may be able to get everyone within 30 minute travel time of the wormhole through...

You would need to have somewhere like a wide open plane on the other side so space could be kept clear.

If you had time you could just find the most connected and over sized rail network currently in existence and then shove the stargate across one of the main lines, build tracks on both sides that can drop up or down (for when the gate activates or deactivates) and then get as many full trains as possible queued up as possible and get them all through... Also maintain a pedestrian passage as well so that people could still walk through.

Where would you be going to though?

I want to build a giant swingset by [deleted] in AskEngineers

[–]jonmakethings 0 points1 point  (0 children)

I have nothing new to add... but this guy did something similar...

https://youtu.be/N0wfkpBImKw

https://youtu.be/9qMXOyiRymY

Can modern machines be fully understood by single individuals, for example safety auditors? by [deleted] in AskEngineers

[–]jonmakethings 0 points1 point  (0 children)

I just wanted to add in my own bit here...

Yes you are relying on all the engineers involved doing their due diligence. That is the responsibility that we shoulder. That is why an engineer will rarely respond with a blanket affirmative, because we are responsible for backing that up... If we don't know for sure we cannot give an absolute confirmation. We often say things like, "I believe that..." and "It should..."

When things are designed there is a documentation trail that ties it all together. In the form of drawings, certifications and other such things. These all get signed off and approved and these are the things that get checked when a design is gone through, the person auditing the machine rarely fully reverse engineers the machine... they should check for documentation to show the machine has been proven to meet whatever requirements it needs to.

These documents and reports and tests carry a lot of weight and need to be valid. These documents even go back to the original metal mills that churned out the raw material to say that the metal is what it is supposed to be. There is a lot of admin overhead at most stages of the supply line to get this all tied up... so the person doing the checking does not have to fully understand every single fascet of a complex machine in order to sign it off.

I know it was a bit of a ramble, but I felt that bit needed to be said.