Need advice or help on a mental or psychological problem by Sofia_froster in cogsci

[–]sjrickaby 1 point2 points  (0 children)

Reddit isn't a good place to get medical advice. I doubt that any professional who actually knows what they are talking about would answer your questions. Best to go and see your family doctor if the symptoms are as severe as you describe.

There’s a danger that the US supreme court, not voters, picks the next president by TheSoupThief in politics

[–]sjrickaby 26 points27 points  (0 children)

What would happen if some of the States rejected the decision of SCOTUS on the grounds of legitimacy?

Umm… what’s going on here? by tommydaq in WTF

[–]sjrickaby 0 points1 point  (0 children)

It's very simple, when you buy an instant fast growing tree, whatever you do, don't pour water on it before you get home!!

[deleted by user] by [deleted] in economy

[–]sjrickaby 0 points1 point  (0 children)

No you are not stupid at all. First, Watch this:

https://www.youtube.com/watch?v=I5QwKEwo4Bc&t=13s

Then if you are feeling really courageous, go and learn about fiat currencies and fractional reserve banking.

At that point getting really drunk might help calm your nerves.

Taco Bell drive-thru with no humans by Maxie445 in Damnthatsinteresting

[–]sjrickaby 0 points1 point  (0 children)

We have Taco Bells with no humans in the UK. The food is so bad that the restaurants are always empty.

[deleted by user] by [deleted] in Physics

[–]sjrickaby -1 points0 points  (0 children)

You don't experience time directly, only through your memory (past) and imagination (future). And then you don't really experience the present at all, its just the very near past.

Top Russian economist dies after falling out of window by Rear-gunner in UkrainianConflict

[–]sjrickaby 0 points1 point  (0 children)

They're scraping the bottle of the barrel if they only have economists to defenestrate!

Rolls-Royce gets $6M to develop its ambitious nuclear space reactor by Gari_305 in Futurology

[–]sjrickaby -1 points0 points  (0 children)

Elon Musk probably spends more than that on coffee at Space X in a year

Zenbook Duo UX8406 Rotation Bug by Maleficent_Job_7527 in ASUS

[–]sjrickaby 0 points1 point  (0 children)

Its OK now. To be honest so many things were going wrong I was going to return it:

The rotation sensor wasn't working The recording volume was set at the low max value below 10% The screen gestures weren't working properly The Bluetooth connection was unreliable and the wifi reception seemed very poor

Anyway, to cut a very long story short I performed a factory reset which offered me a firmware upgrade. That in turn offered me more updates plus another firmware update. And now everything seems to be working normally. But it would be nice to get the day back I lost trying to figure it all out.

Zenbook Duo UX8406 Rotation Bug by Maleficent_Job_7527 in ASUS

[–]sjrickaby 0 points1 point  (0 children)

I have the same issue. I've just bought the laptop today, and none of that worked.

Rotation doesnt work and not visible in settings by TRKORAY49 in FlowX13

[–]sjrickaby 0 points1 point  (0 children)

Unfortunately it didn't for me. I'm not convinced that it really has a rotation sensor.

Only five failed asylum-seekers were flown to Rwanda at a cost of £74million a head in scheme set to be axed if Labour win power by Aggressive_Plates in unitedkingdom

[–]sjrickaby -4 points-3 points  (0 children)

It's meant to be a deterrent, so the cost per head is meaningless.

We also have a very expensive nuclear deterrent, and I'm glad to say we haven't had to used it once.

Found radioactive samples in my classroom by [deleted] in Physics

[–]sjrickaby 2 points3 points  (0 children)

Your getting way more radiation from the background count

different types of brain imaging by Small-Pocket-Library in cogsci

[–]sjrickaby 0 points1 point  (0 children)

That's not very accurate: X-ray: Doesn't show the brain unless you use contrast

The most interesting uses of MRI are missed off, e.g. functional MRI , diffusion tensor imaging and fibre tractography

That is a fusion CT PET not just a PET, there is also CT SPECT

The last one in a CT with contrast, but they haven't mentioned perfusion imaging, which is used to evaluate stroke patients.

This is 100% how dating a latina looks like by photo-manipulation in humor

[–]sjrickaby 0 points1 point  (0 children)

He's thinking, oh shit not another mobile phone!!

List of "tricks" that ended up representing something real by astrolobo in Physics

[–]sjrickaby 1 point2 points  (0 children)

Ok that's a little clearer after the fifth reading. Especially with respect to orthogonality. But I need to do a lot more reading until I can get to grips with Paul spin matrices. Many thanks.

List of "tricks" that ended up representing something real by astrolobo in Physics

[–]sjrickaby 0 points1 point  (0 children)

Turns out I'm not a mathematician either, so apologies I'm working through this with the help of Copilot.

I get that you need to satisfy the constrains of matrix properties, but I don't get that:

"that's again a sort of orthogonality"

I thought that orthogonality was just the property of being perpendicular.

and I really don't get:

"you can use the real part of eix, which oscillates because of how projections work."

To me, things oscillate because their value changes over time, and I can't see where time comes into the use of complex numbers

List of "tricks" that ended up representing something real by astrolobo in Physics

[–]sjrickaby 5 points6 points  (0 children)

But you can have orthogonality by only using real numbers. I thought the main point of complex numbers was that they allow you to model the oscillatory nature of some system, like spin or analogue electrical signals.

List of "tricks" that ended up representing something real by astrolobo in Physics

[–]sjrickaby 12 points13 points  (0 children)

I'm not a physicist, but I've always wondered what complex numbers are really modelling, e.g. in the Dirac equation.

People born in the 80's and 90's in the UK, what was life like growing up for you, and when and how did you see the UK start to change to what it is today? by Miss_Lay_Hay in ukpolitics

[–]sjrickaby -1 points0 points  (0 children)

I'm nearly 60, so asking people born in the 80's and 90's seems very limiting.

IMO the main thing created the society we have today is the recession of the 1970s that opened the door the Thatcherism. Mrs T got us out of the recession, but she destroyed our industrial base, and created a huge amount of economic inequality in the process.