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Re:Why lasers are so brilliantly useful by wincy on Wednesday January 13, 2021 @11:41AM (#25764432)
A lifetime ago I worked a retail job. I’d often say to coworkers “isn’t it amazing we get to work in the future, we get to use laser beams all the time!” They’d stare at me blankly, and I’d squeeze the “laser gun” I was holding in my hands to scan a UPC. The most I’d ever get was a groan like I’d told a dad joke. No one was ever impressed.

To me it’s amazing how such wondrous technological advances become mundane so quickly, the future is here and nobody is astonished.

Re:Why lasers are so brilliantly useful by nearbuy on Wednesday January 13, 2021 @12:36PM (#25765345)
On the topic of how wondrous technologies become mundane, I find it amazing how we surpassed some of the magic from Harry Potter, and no one is impressed.

The first book was published in 1997. The characters have very handy magic wands, which among other things can be used as flashlights. They can send magical letters (howlers) that can yell at someone in the sender's voice.

Fast forward to 2021, and suddenly everyone is walking around with a fancy tool in their pocket that can be a flashlight, instantly video chat with people, and answer questions on nearly any topic.

Even the offensive spells seem inferior to modern weapons. The wizards have to recite an incantation for every shot, while assault rifles can spray 900 rounds per minute.

Re:Why lasers are so brilliantly useful by cogman10 on Wednesday January 13, 2021 @02:44PM (#25767038)
I graduated high school in 2004. It constantly amazes me how far we've come.

Back in the 90s, CDs were the height of getting music. 1 disk would carry around 24 songs. That's it. The internet was accessible, but limited to around 56kbps on a desktop. Mobile data wasn't a thing. Texting wasn't a thing. Cell phones were barely a thing, but coverage was practically non-existent.

Most people got their media only from broadcast stations. You had radio, television, and the newspaper and that was pretty much it.

The fact that data is available pretty much everywhere is incredible. Even in the last 10 years, we've went from data being only available in the cities to being able to stream video in all but the most remote parts of the US.

On top of that, something not really appreciated by the general public is just how good codecs have gotten. It is INCREDIBLE what can be done with the same amount of bandwidth we had in the 90s. AV1 + Opus can very nearly stream SD content at 56kbps! 1Mbps wasn't enough for SD content with MPEG2 and MP3 audio. Now, 1Mbps is enough for 1080p HD content.

Re:Why lasers are so brilliantly useful by gerdesj on Wednesday January 13, 2021 @06:46PM (#25769646)
I'm 50.

We had cassettes and vinyl. I didn't have a Sony Walkman but my first personal cassette player was similar. It was too big to go in a pocket and was generally worn clipped to a belt or on a shoulder lanyard under your coat. By the time I went to Plymouth Poly (UK) in 1989 your cassette player was small enough to fit in the breast pocket of your sleeveless denim over jacket (over the leather jacket that is!)

My first home PC was a ZX80 with 1Kb of RAM - not all of the 1Kb was available. Later I had a C64 which nowadays has a USB interface - I re capped it, sorted out a few other details and got it going again. The first game I played on it in 2018 when it sparked up was "attack of the mutant camels" - a Jeff Minter classic.

Re:Why lasers are so brilliantly useful by ryanmercer on Thursday January 14, 2021 @07:11AM (#25775447)
>We had cassettes and vinyl.

Which are both still being manufactured :)

I'm 35, I remember in 7th grade when the industrial tech teacher told us that "one day in the future, you'll have this little cube in your hand mimes an inch or so cube that holds hundreds of CDs worth of music and that is how you'll listen to them" Yeah, sure Mr. Pedigo... fortunately he lived long enough to see the iPod come into existence before leukemia took him way too early.

You can have an obscene amount of music on this tiny little sliver of a micro SD card but we still have artists putting their albums out on cassette and vinyl. It's so strange and wonderful at the same time.

Re:Why lasers are so brilliantly useful by cogman10 on Thursday January 14, 2021 @09:59AM (#25777031)
Oh man, I remember laughing about that exact idea. Though, at the time it was going to be "holographic storage" which never seemed to pan out.

We never envisioned that NVMe would end up being the storage medium of choice for pretty much everyone.

I still remember my first 128MB usb drive. At the time I was like "Wow, this holds about 100 floppies worth of data, insane!"

Re:Why lasers are so brilliantly useful by ryanmercer on Thursday January 14, 2021 @10:53AM (#25777804)
My first thumb drive was 32mb, cost me 100ish USD IIRC. I was so proud of that thing, sadly I seem to have lost it in my most recent move but I keep hoping that little bit of nostalgia turns up in a box somewhere.
Re:Why lasers are so brilliantly useful by cogman10 on Thursday January 14, 2021 @11:51AM (#25778648)
About the same cost of my first thumb drive.

It was one of these (though I believe the model before).

https://www.techpowerup.com/5494/usb-sticks-from-geil

Blazing fast 20MB/s write and 300MB/s read (lol)

Re:Why lasers are so brilliantly useful by radley on Wednesday January 13, 2021 @10:31PM (#25771524)
We learned we could double our floppy disk storage capacity by using a hole punch to cut a notch out of the sleeve and flipping it over.
Re:Why lasers are so brilliantly useful by autokad on Wednesday January 13, 2021 @08:43PM (#25770710)
I remember: how much it sucked none of the radio stations around me played the music I liked.

how I wanted to learn advanced math topics, foreign languages, etc, but there was no way for me to learn it.

How amazed I was when our school library got those encyclopedia disks and we can look up a lot of things

how I use to dial home with 2 rings to signal my mom to pick me up at school. Telephone company eventually gave us a huge bill.

when I wanted to experiment with linux and other various tech, but getting ahold of hardware to experiment with was too expensive for me.

Re:Why lasers are so brilliantly useful by cogman10 on Thursday January 14, 2021 @11:54AM (#25778703)
Right there with you. My first linux machine was an old Pentium 2 Gateway box :D.

I also grew up in idaho mountains so you can imagine how bad radio stations were. Nothing but talk radio and one "hits" station.

Napster was a small lifeline into the rest of the world, though for the longest time we were 5 to 10 years behind the rest of the world when it came to things like pop music. It was bizarre!

Re:Why lasers are so brilliantly useful by recursive on Wednesday January 13, 2021 @08:00PM (#25770337)
I vividly recall getting a Diamond Rio PMP300 in the (late) 90s. 32MB of flash memory and hardware mp3 player. Took one AA battery.
Re:Why lasers are so brilliantly useful by abrowne on Wednesday January 13, 2021 @09:37PM (#25771134)
My friend got one and would throw it against the wall—he had headphones with long a cable—to show how it didn't skip (unlike our portable CD players). Until the battery door broke. (He taped it on, but stopped throwing the player.

I eventually got the fat iPod, the first 20 GB. I loaded my whole library and could listen to whatever album I wanted on my walk home from school in the winter.

Re:Why lasers are so brilliantly useful by dividedbyzero on Wednesday January 13, 2021 @04:23PM (#25768149)
I'm not from the US, at what age do people typically graduate highschool?
Re:Why lasers are so brilliantly useful by cogman10 on Wednesday January 13, 2021 @04:29PM (#25768208)
18
Re:Why lasers are so brilliantly useful by Ajedi32 on Wednesday January 13, 2021 @01:44PM (#25766278)
See also: Why Harry Potter should have carried an M1911 [1]

[1]: https://www.reddit.com/r/guns/comments/gwl0v/why_harry_potte...

Re:Why lasers are so brilliantly useful by leetcrew on Wednesday January 13, 2021 @02:47PM (#25767068)
I get that this is not entirely serious, but it's easy to build a case for why muggle weaponry would not pose a serious threat to witches/wizards in the harry potter universe. the series makes several references to passive defensive enchantments. if the entire campus of hogwarts can be made almost impenetrable to hostile magical forces, it doesn't seem like much of a stretch to imagine that robes could be enchanted to be bulletproof. a skilled enchanter might be able to create passive defenses against most/all conventional weapons.
Re:Why lasers are so brilliantly useful by powersnail on Wednesday January 13, 2021 @07:27PM (#25770054)
If Bellatrix Lestrange could go for throwing knives, I feel that guns, and especially snipers, would be pretty effective at assassinating witches/wizards. Most of them doesn't seem to be putting up a shield all the time.

Reminds me of a light novel, where the MC used witches' magics to bootstrap his industrial process, instead of fighting directly with magic.

Re:Why lasers are so brilliantly useful by waste_monk on Wednesday January 13, 2021 @08:32PM (#25770610)
>eminds me of a light novel, where the MC used witches' magics to bootstrap his industrial process, instead of fighting directly with magic.

Out of curiosity, do you recall the title / author?

Re:Why lasers are so brilliantly useful by bfuclusion on Wednesday January 13, 2021 @08:50PM (#25770771)
If I had to guess: Release that Witch
Re:Why lasers are so brilliantly useful by waste_monk on Wednesday January 13, 2021 @11:15PM (#25771901)
Thanks, I'll check it out.
Re:Why lasers are so brilliantly useful by Doxin on Thursday January 14, 2021 @03:54AM (#25773862)
Surely if wizard robes can be enchanted to be bullet proof then throwing knifes can be enchanted to pierce bulletproof armor.
Re:Why lasers are so brilliantly useful by TeMPOraL on Wednesday January 13, 2021 @04:32PM (#25768241)
I have a sketch of a HP fanfic short story I should really flesh out one day. It involves muggles launching an operation to retrieve a key person from Hogwarts just as the final battle with Voldemort is about to erupt there. The story would follow a bunch of SAS soldiers who fly in on helicopters, while covered by a wing of fighter jets that intercept a dragon, and then provide distraction / air support for the good guys. The overall tone was meant to be similar to the start of Gulag mission from Modern Warfare 2[0].

I'm not a good writer, so this will likely end up a military porn story to the tune of Salvation War[1] - so perhaps it's best if it remains unwritten. But really, if you think about it, the Wizarding World wouldn't stand a chance against even single organized operation by a modern muggle state military.

--

[0] - https://www.youtube.com/watch?v=BDX5uToKuPY

[1] - https://tvtropes.org/pmwiki/pmwiki.php/Literature/TheSalvati...

Re:Why lasers are so brilliantly useful by zabzonk on Wednesday January 13, 2021 @04:49PM (#25768388)
Not HP, but see https://www.goodreads.com/book/show/24997064-the-nightmare-s... which pits elves and dragons against the British military and intelligence services. All books in the Laundry Files, of which this is one, are great reads.
Re:Why lasers are so brilliantly useful by TeMPOraL on Wednesday January 13, 2021 @04:56PM (#25768470)
Oh, 'cstross is still writing Laundry Files? Awesome! I've read up to book 4 or 5, then dropped for reasons I don't remember. Time to read it all from the beginning then; thanks for reminding me.

My favorite little bit of the series so far was how humans eventually figured out what makes Basilisks tick, managed to replicate it on an FPGA, and turned CCTV cameras into defense turrets.

Re:Why lasers are so brilliantly useful by ampdepolymerase on Wednesday January 13, 2021 @12:57PM (#25765635)
The fidelius charm violates every known law of information theory and machine learning heuristics, not to mention the philosophical implications.
Re:Why lasers are so brilliantly useful by ycombinete on Wednesday January 13, 2021 @11:14PM (#25771899)
Which isn’t much compared to the amount of space-time that gets manipulated during the series. Literal time travel, giving items more space inside, than that take up externally etc.
Re:Why lasers are so brilliantly useful by ampdepolymerase on Wednesday January 13, 2021 @11:52PM (#25772199)
Most of the spacetime manipulation are still within the realms of physics, or at least can be reasonably described as long as you change a few assumptions e.g. the existence of negative mass, an infinite energy source etc. Only the time turning and fidelius have actual philosophical implications and former has been thoroughly studied and debated in both normal philosophy and natural philosophy.
Re:Why lasers are so brilliantly useful by mrfusion on Wednesday January 13, 2021 @06:29PM (#25769479)
Can you explain?
Re:Why lasers are so brilliantly useful by serf on Wednesday January 13, 2021 @10:03PM (#25771324)
"The Fidelius Charm (incantation unknown) is an extremely difficult, multifaceted and potent charm that can be used to conceal a secret inside an individual's soul; the witch or wizard who houses the secret is known as the Secret Keeper.[1] A dwelling whose location has been protected by this spell is then invisible, intangible, unplottable and soundproof. This is an extremely old spell, one of the most ancient of all."[0]

it's sort of like an in-world deus ex machina device, much like many of the spells and artifacts in the HP franchise.

[0] : https://harrypotter.fandom.com/wiki/Fidelius_Charm

Re:Why lasers are so brilliantly useful by ampdepolymerase on Wednesday January 13, 2021 @10:46PM (#25771656)
The most important crux of the matter is that it can hide both a posteriori and a priori knowledge. An existing piece of information in the world can literally be rendered unavailable except to a select group of people.

In the book:

> As long as the Secret-Keeper refused to speak, You-Know-Who could search the village where Lily and James were staying for years and never find them, not even if he had his nose pressed against their sitting room window!

This raises a lot of uncomfortable metaphysical and epistemological questions. Is this a purely psychological effect? Or does this operate on the information itself? If it operates on information itself, how big can you scale the effect?

Ignoring magic, if such an effect truly exists, what are its implications for information theory? (Especially since the information is clearly not destroyed as the spell can be undone.) Information itself could become weaponized. Can a RAM bit flip be triggered though the application of such an effect? Or is this effect purely mental?

What about second and third order effects? Does the effect propagate? Assume a machine learning system with the following knowledge/word vectors: Food + Italy = Pasta. If Italy is placed under the fidelius, are the vectors and weights going to magically re-arrange themselves? How will people talk about the dish pasta?

Of all the spells in J.K. Rowling's world this is probably the most creative/disturbing. The whole gimmick with the seven horcruxes is merely distributed systems theory applied to a lich's phylactery, a concept that can be traced back millennia to various ancient civilizations. Splitting and and anchoring soul has nothing on arbitrarily erasing, manipulating, and restoring information itself on an infinitely large scale.

Re:Why lasers are so brilliantly useful by tuatoru on Wednesday January 13, 2021 @11:28PM (#25772015)
We just need to get the Antimimetics Division[1] involved.

"An antimeme is an idea with self-censoring properties; an idea which, by its intrinsic nature, discourages or prevents people from spreading it."

1. http://www.scpwiki.com/antimemetics-division-hub

Re:Why lasers are so brilliantly useful by WrtCdEvrydy on Wednesday January 13, 2021 @01:12PM (#25765845)
Even Star Trek with it's PADD was susperseeded but it's just normal for people...
Re:Why lasers are so brilliantly useful by p1mrx on Wednesday January 13, 2021 @07:21PM (#25769992)
Flashlights, cell phones, and assault rifles all existed in 1997. There was no portable internet access, but Harry Potter didn't have that either.
Re:Why lasers are so brilliantly useful by nearbuy on Thursday January 14, 2021 @08:03PM (#25785550)
Assault rifles, certainly, were already superior to offensive spells in 1997.

Cell phones existed, but they were just phones and few people had them. Now everyone walks around with this multi-tool that's of comparable utility to a magic wand. Phones now have a flashlight, camera, calling, video chat, maps and navigation, Google, real-time language translation, etc. The Harry Potter series doesn't have magic versions of all of these abilities specifically, but they all seem like things that could have seemed magical in 1997. In 1997, you might think having a map that updates your position live, or can automatically find the nearest burger restaurant is really cool and magical.

If you've ever fantasized about what it would be like to live in a world with magic, here's one perspective: we do live with magic, and you get used to it.

Re:Why lasers are so brilliantly useful by cameronh90 on Wednesday January 13, 2021 @01:12PM (#25765855)
Reminds me of that Louis CK bit about internet on aeroplanes: https://www.youtube.com/watch?v=nUBtKNzoKZ4

"You’re flying! It’s amazing! Everybody on every plane should just constantly be going: “Oh my God! Wow!” You’re flying! You’re sitting in a chair, in the sky!”"

Re:Why lasers are so brilliantly useful by atoav on Wednesday January 13, 2021 @04:33PM (#25768247)
I think bringing back that absolute bafflement intentionally once in a while is good habit, especially for people working in technology.

I am constantly amazed that computers work at all. The more I learn about it the more amazed I am that anything works. Especially software wise I see soo much duct tape on so many layers, like looking at a house of cards that could (or rather should!) crumble down any minute, because it seems to defy reality.

Re:Why lasers are so brilliantly useful by pengstrom on Wednesday January 13, 2021 @04:42PM (#25768341)
My illusions of technology were lifted after a course in advanced computer architecture. The true technical complexity is unfathomable enormous. I mean, correctly flickering 3 billion times per second on nm scale and being super sure you got the designs right? Cannot imagine.
Re:Why lasers are so brilliantly useful by atoav on Thursday January 14, 2021 @02:50AM (#25773434)
And even if you did get everything right, every now and then a friggin' cosmic ray zaps through just in the right way to flip that one bit in your memory.
Re:Why lasers are so brilliantly useful by dver on Wednesday January 13, 2021 @03:37PM (#25767634)
And just skipping over the running out of money thing.

Old enough that ATM's were a big change.

Before that, it was a Friday trip to the bank to get cash for the weekend. Credit

Re:Why lasers are so brilliantly useful by randycupertino on Wednesday January 13, 2021 @06:04PM (#25769223)
Haha... this is so true.

When I toured some kids around the Stanford cell therapy lab, filled with over a billion dollars of cutting edge equipment, the thing they were most impressed with was the eye wash station.

They MARVELED at the damn eye wash station. Technology that has been around for ... over hundreds of years and otherwise hasn't really changed. They asked more questions about the damn eye wash station than anything else, lol.

Re:Why lasers are so brilliantly useful by cosmodisk on Wednesday January 13, 2021 @05:08PM (#25768614)
Yes,sometimes we need to be reminded: https://youtu.be/yFj46Ei61Mg [7:30-8:00] I nearly took off the sofa just by watching it.
Re:Why lasers are so brilliantly useful by keanebean86 on Wednesday January 13, 2021 @09:03PM (#25770882)
Back in 2008-9 or so I had a 3g altel phone during the Verizon merger. If I forced my phone to 3g I could connect to Verizon towers. It was such a great feeling tethering my phone to my laptop to play WoW at 70 MPH.

*I wasn't driving. Also horrible ping.

Re:Why lasers are so brilliantly useful by richardw on Thursday January 14, 2021 @12:42AM (#25772559)
Uni in 1995 and saw my first browser. Now I can drive in Africa while having a voice chat over my phone data with a friend in Chicago or Sydney.
Re:Why lasers are so brilliantly useful by superkuh on Wednesday January 13, 2021 @11:58AM (#25764744)
When I was a child I'd often stare into the laser scanners at store checkouts in awe. They were so cool. Full of rotating mirrors and lasers. The modern handheld ones are a little less cool.

But, re: "why lasers are useful", it's in the name. They're a way to get a spatial and phase coherent light source that's actually high power. In the old days they'd have to take a mercury arc lamp and put a pinhole in front of it. The pinhole gave it coherence but traded away all the intensity.

Re:Why lasers are so brilliantly useful by d33lio on Wednesday January 13, 2021 @02:50PM (#25767103)
I just bought a proper $250 Zebra scanner for some personal inventory projects / projects that utilize pdf417 and data matrix 2d bar codes and I have to say... this is the absolutely coolest piece of "plug and play" tech I've bought in years! Granted, these scanners largely use machine vision tech but lasers are still used as a form of "dumb" auto focus aid.

On another tangent, I still CANNOT believe that one company at least within the US controls 100% of the issuance of UPC codes. They sell them for up to *$30 A PIECE*! We need a "LetsEncrypt" for UPC codes - granted they serve an important role in load balancing across online stores, preventing counterfeit goods and in Amazon's case... penalizing sellers when they find the same UPC being sold on another online platform at a lower price ;)

Lasers will always be cool

Re:Why lasers are so brilliantly useful by hutzlibu on Wednesday January 13, 2021 @12:49PM (#25765501)
"the future is here and nobody is astonished."

Maybe thats because that is always the case (even though progress accelerated).

But since for most people the future still means they slave away in a boring job, that might be a reason they are not thrilled all the time.

Re:Why lasers are so brilliantly useful by leetcrew on Wednesday January 13, 2021 @04:13PM (#25768039)
on a similar note, most people only get to experience "future stuff" after it has been relentlessly optimized for cost to the point where it can be economically deployed at scale. a lot of the coolness has been stripped out at that point.

on a couple occasions, I've flown in small GA planes. a bit bumpy for my tastes, but there really is a sense of wonder and awe when you can just ask the pilot to fly anywhere and see what stuff looks like from the sky. I don't get the same feeling on commercial flights; I just experience being stuck in a metal tube with beige plastic trim for a few hours. I'm still amazed by what computers can do, but to most people they are just "the thing I use to browse instagram".

Re:Why lasers are so brilliantly useful by throwaway314158 on Wednesday January 13, 2021 @02:04PM (#25766544)
> To me it’s amazing how such wondrous technological advances become mundane so quickly, the future is here and nobody is astonished.

When they're ubiquitous they lose a lot of wonder. But furthermore, a lot of these advances are buried/not directly visible to the end-user. Think of a CD player: You use a laser to produce sound from (what apppears to be) a smooth plastic disc.

I bet the concept of the wheel was pretty damn wondrous in the beginning too.

Re:Why lasers are so brilliantly useful by tuatoru on Wednesday January 13, 2021 @11:56PM (#25772227)
It was even more exciting two lifetimes ago.

In short order people got electric light (magic! just flick a switch), phonographs (on hearing one, people apparently went looking for the soprano behind the curtain), moving pictures (there are stories of audiences being panicked by a film--black and white, 16 fps, grainy, silent, and all--of a train coming toward the camera), radio (plays, orchestras, and other entertainment from hundreds of miles away), and all sorts of wonderful houshold appliances like refrigerators, vacuum cleaners and electric heaters and stoves which saved tens of hours per week. And glow-in-the-dark radium watches, and telephones.

Having lived through these (in a rural area, things came a bit later than in the big cities) my mother-in-law was unimpressed by the movies about Buck Rogers rocketing around the solar system and Dick Tracy's video wristwatch, taking them as just things that hadn't made it to her town yet.

Re:Why lasers are so brilliantly useful by cosmodisk on Wednesday January 13, 2021 @05:04PM (#25768556)
I get you. And it's not just lasers, it's so many more. Sometimes I catch myself thinking that the technological progress is quite slow, but then I slap myself in the face to remind myself that in just couple of decades we ended up having devices in our pockets just like those from sci-fi films!

Lasers are great tech,I used to be fascinated by them when I was a kid devouring science literature. I hope I'll more great use cases in the near future.

Re:Why lasers are so brilliantly useful by 7952 on Thursday January 14, 2021 @02:58AM (#25773472)
That is how I feel about WiFi. The fact that you can send out large amounts of data on shared channels is amazing. It is astonishing that it works as well as it does.
Re:Why lasers are so brilliantly useful by jonplackett on Wednesday January 13, 2021 @07:37PM (#25770140)
Mitchel and Webb did a very funny sketch about this

https://youtu.be/8HgejSCHRi8

Re:Why lasers are so brilliantly useful by mc32 on Wednesday January 13, 2021 @11:33PM (#25772062)
Maybe they knew it was a cheap CCD unit (I admit, not likely if it was the multi-directional units you have at checkouts, etc.)