Abdullah Khalid

quantum scientist, trying to build a quantum computer, hoping for singularity and space travel in lifetime. want to stop surveillance dystopia, climate change.

[Abdullah Khalid @abdullahkhalids]

@jenseisert Thanks. I sent you an email.

[Abdullah Khalid @abdullahkhalids]

@ajpirzada @dev_qanderson That said, trying to anonymize crypto transactions is an active area of research (as is deanonymizing it). Mixers are the most popular technique one can use https://t.co/420nKihgej

[Abdullah Khalid @abdullahkhalids]

@ajpirzada @dev_qanderson 3. Most crypto services will handover any info when requested by tax authorities.

4. If you do get caught, you will get hit with money laundering type charges which usually carry much harsher sentences than tax avoidance.

[Abdullah Khalid @abdullahkhalids]

@faraz_r_khan @typesfast Notable that crude oil is mostly exported rather than refined and then exported.

I presume as Canada scrambles to find new markets for its products it will find that there is a much larger market for refined oil products than crude.

[Abdullah Khalid @abdullahkhalids]

@faraz_r_khan @typesfast https://t.co/aodmETzYgZ

Too many things.

[Stephen Barlow @SteB777]

There's no good reason to believe our civilization/system will be robust and resilient in the face of increasing climate impacts. This is just an article of faith. No one has ever studied the resilience of our system, again, don't take my word for it.
https://t.co/n03poUzqSQ
10/

[Jason Hickel @jasonhickel]

China is overturning mainstream development theory in astonishing ways.

China's GDP per capita is only $12,000. That's 70% less than the average in high-income countries.

And yet they have the largest high-speed rail network in the world. They've developed their own commercial aircraft. They are the world leaders in renewable energy technology and electric vehicles. They have advanced medical technology, smartphone technology, microchip production, aerospace engineering...

China has a higher life expectancy than the USA, with 80% less income.

We were told that this kind of development required very high levels of GDP/cap. But over the past 10 years China has demonstrated that it can be achieved with much more modest levels of output.

How do they do it? By using public finance and industrial policy to steer investment and production toward social objectives and national development needs. This allows them to convert aggregate production into development outcomes much more efficiently than other countries, where productive capacity is often wasted on activities that may be highly profitable to capital, or beneficial to the rich, but may not actually advance development.

Of course, China still has development gaps that need to be addressed. And we know from some other countries that higher social indicators can be achieved with China's level of GDP/cap, by focusing more on social policy. But the achievements are undeniable and development economists are taking stock.

[Abdullah Khalid @abdullahkhalids]

@TonyTheLion2500 If Timothy Gowers can live struggle through problems on video - getting confused, going down the wrong path, failing to see connections - then the rest of us have no reason to be embarassed doing the same. https://t.co/mTo9J4Wh0L

[yatharth ༺༒༻ @AskYatharth]

i like this question (try it! its deceptive) because it highlights that probability makes no sense unless u explicitly or implicitly have a distribution you're sampling from

in math, we autistically define out the whole distribution. in everyday life, it's implicitly constructed

[Abdullah Khalid @abdullahkhalids]

@ElliotLip @littmath In STEM PhD programs, course grades are, for most students, not a signal for any outsiders. (Exceptions being the high achievers who apply for scholarships, and low achievers who might be kicked out of the program). Yet students try hard!

[Abdullah Khalid @abdullahkhalids]

@TheTelescreen0 @stgbluna These are ladder operators
https://t.co/4591YJZkfa

[Abdullah Khalid @abdullahkhalids]

@zack_overflow 1. Install one version in env.
2. Download other version manually.
3. Patch it to change the name of the package.
4. Install it in same env.
5. Change your import statements as needed.

[Abdullah Khalid @abdullahkhalids]

@IsomorphicPhi Example: A molecule can rotate/vibrate in several different ways, with associated symmetry groups (H_i). You can use the irreps of these groups to induce reps of the symmetry group, G, of the whole molecule.

[Tom Wong @thomasgwong]

I've been keeping an informal list of quantum supremacy/advantage claims and rebuttals. Anything missing?

[Abdullah Khalid @abdullahkhalids]

@Hassaan_PHY The similar issue occurs in quantum optics theory, where the basis functions |x〉 ∀ x ∈ (−∞, ∞) are the foundation of your theory, but complete mathematical+physical nonsense (cant be normalized or created in lab). So you only deal with ∫ ψ(x) |x〉 dx for normalized ψ.

[Abdullah Khalid @abdullahkhalids]

@Hassaan_PHY Hell, it took *centuries* to determine if one could use Newton's model to predict the long term behavior of the solar system. The danger was that numerics would devolve into chaos while the system remained stable or vice versa. New math had to be developed to answer this.

[Abdullah Khalid @abdullahkhalids]

@Kaju_Nut @Hassaan_PHY The only way EM fields/potentials manifest is by *moving* charged particles in spacetime. You can't test or use EM without an underlying theory of how matter moves. A complete theory also requires knowing how matter appears to move to different observers.

[Abdullah Khalid @abdullahkhalids]

@Hassaan_PHY You have elucidated your perspective well, and I largely agree. My viewpoint is that the domain of applicability of a theory is determined (besides experiment etc) by where it is mathematically consistent. So in pre-1905, people restricted applied EM predictions to where v<<c.