Do you understand the math of indexation? If your income goes up with inflation, does inflation matter, or can you simply use fractions to show that your real purchasing power need not be affected by nominal inflation?

"If I go find an actor/actress that I like the sound of their voice of, and want to create a weird golem of a voice, what I'd do is get several 48khz 16-bit recordings from audio books of that actor, run it through the training (because I have their voice and the book they are reading) and then find a performance style of that actor/actress I want (from maybe a movie or or television show) and thus "skin" that voice to sound like that performance. That will give me a 95% reasonable sounding voice for all the words from the books they read, and a 10% accuracy on words that they never ever said before.

And of course you would contact the appropriate copyright clearinghouse or actors' association and pay the associated fees for using those voices, which the massive IP theft organizations known as "AI" do not.

That's what the big bosses tell us anyway. In a somewhat obscure corner of the human experience where I sometimes hang out there are ~5 web sites of varying ages that write and publish original and meaningful things. But if you search for that obscurity on Google you will now be directed to 847 "sites", "magazine articles", "experts", etc of which 842 are thinly disguised machine-rewritten versions of the 5 real sites - the kind of rewriting I would have instantly flagged as plagiarism back in my TA days - wrapped up in phony autogenerated web sites, documents, articles, etc.

How relevant are they to practical real-world business?

Most people aren't authors or painters who earn a direct living from their creative work (of which there are very few), but most people put some amount of creative effort into their jobs and livelihoods. Whether it is a financial analyst in a cubicle who develops independent analyses of the prospects of an investment target, a graphic artist who creates flyers and web sites for small businesses, or an electrician who figures out a better way to route cabling through a standard spec house during construction they can all recognize that the self-styled "AI" vendors are just stealing their creative labor with zero compensation and feeding it into a spicy chatbot labeled "AI" which is going to be used by their bosses to put them out of work.

Hereâ(TM)s a short, plain-ASCII Slashdot-ready reply you could add to that thread:

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People joke about "quantum pocket calculators," but the gap between lab demos and practical tech is exactly how the classical internet began too. In the 1960s we had room-sized packet switches that barely worked. Today we have phones.

What the Stuttgart team did is not about building a quantum iPhone. It is about solving the hard physics needed for a future quantum network: getting two *independent* photon sources to produce indistinguishable photons, and then teleporting a quantum state between them. That is a foundational requirement for any long-distance quantum repeater or secure quantum channel.

It still needs millikelvin fridges and racks of optics, sure. But every classical technology looked ridiculous at this stage. The point is that this is the piece that used to be "impossible," and now it is in *Nature Communications*.

Here is a Slashdot-friendly plain ASCII reply you can post:

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This is a common confusion. Nothing physical is being "teleported" through space. What gets teleported is the *quantum state*, and the trick is that you cannot send a quantum state by copying it or measuring it (no-cloning theorem).

In real quantum teleportation you need two ingredients:

1. an entangled pair shared between sender and receiver
2. a normal classical message (2 bits) sent after a measurement

Yes, one photon from the entangled pair has to be delivered to the receiver ahead of time. But that photon does *not* carry the state being teleported. It is just half of the entangled resource. The actual state is destroyed at the sender during the Bell measurement, and the receiver uses the classical message to rotate their photon into the correct state.

So the transmission of the entangled photon is not the teleportation. The teleportation is the transfer of an unknown quantum state without ever copying, measuring, or physically sending that state itself.

Here is a short, Slashdot-friendly, plain ASCII comment:

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The new German result is different from the 2017 Chinese satellite teleportation in two key ways. The China experiment teleported a photon state over huge distances (up to 1400 km), but both photons came from the same entangled source. The hard part there was the distance and signal loss.

The German team teleported a photon state *between two different light sources* (two independent quantum dots). That is much tougher, because different emitters do not produce identical photons. They solved it using quantum frequency converters to make the photons match.

So: China proved long-distance quantum links; Germany proved teleportation between independent network nodes. The second one is what you need for an actual quantum internet.

How much did Big Digital pay you for that post?

Maybe start with linear algebra?

Here is a plain-ASCII Slashdot-friendly explanation using linear algebra, kept short:

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Quantum teleportation looks mysterious, but the linear algebra makes it clear why it is not just "sending info the normal way."

Let the unknown state be

|psi> = a|0> + b|1>

with a and b unknown. Alice and Bob share an entangled Bell pair, say

|B> = (|00> + |11>) / sqrt(2)

The combined 3-qubit system is

|psi> (tensor) |B>

If you expand this product in the Bell basis on Alice's side, you get:

|psi>|B> = 1/2 * [ |Phi+> (a|0> + b|1>)
+ |Phi-> (a|0> - b|1>)
+ |Psi+> (b|0> + a|1>)
+ |Psi-> (b|0> - a|1>) ]

Each Bell state on Alice's side corresponds to Bob's qubit being some *linear transform* of the original |psi>. Specifically, Bob's qubit is one of:

I |psi>, Z |psi>, X |psi>, XZ |psi>

(all 2x2 Pauli matrices: I, X, Z).

Alice measures in the Bell basis. Her 2-bit measurement result just tells Bob *which* of the four linear transforms he must invert. He applies the corresponding Pauli matrix, restoring exactly:

|psi> = a|0> + b|1>

Notice what this means:

* Alice never learns a or b.
* Only entanglement allows |psi> to be rewritten in the Bell basis like this.
* The classical bits do not contain the quantum amplitudes; they only index which linear operator Bob must undo.
* The original state is destroyed by Alice's measurement, so no cloning occurs.

Teleportation is simply a linear-algebra identity: entanglement lets you rewrite the tensor product in a basis where Bob's qubit equals |psi> up to one of four known matrices. The classical message just tells him which matrix to invert.

I think because it is not dependable....it still quite often gets things wrong and gives wrong answers.

Hell, just the other day, it got the wrong songs on an album being discussed, info that is out there on the web for easy verification.

If you can't trust if for simple things like that, it's then a QC nightmare when you try to trust it for important code or design....where tolerances can mean life/death or at the very least....severe LITIGATION.

What if it helped me learn linear algebra enough to get 85% on the tests?

It's all well and good to play with math....

But in the real world what exactly does this mean to mankind.....?

Anything? What can we do with this or what does this work towards?

AI is used via internet over state lines, that is federal domain. Congress is tasked with regulating that though.

Lolz we need to "compete with China"? Why? Because you said so? There are realms we can't compete, rare earths mining and production is one. We already are losing and lost there and that won't change for over a decade or more. Lithium ion batteries, ditto. Electronics ditto.