I think technology itself is enabler here. Airlines have to figure how to price the convenience of video calls vs privacy/solitude/disturbances to the co-passengers. i think having dedicated video call booths priced per 5 min chunks can address the issue.

And somewhat immediately, my brain assumes that people will use the booths to join the mile-high club. Virtually, of course.

Given high value placed on every square inch of the passenger cabin if that booth isn't being used as much as they'd earn from the extra seat they could sell instead, it's never happening.

Recently this was in news. There was a rumor that the plutonium device planted in Nanda Devi exploded and caused floods in India. https://www.bbc.com/news/world-asia-india-56102459

Satellite surveys suggest that the flood originated in the valley of the stream Raunthi, which is the first major confluence upstream of Reni village on the Rishi Ganga. This puts the origin of the flood at a tributary valley that's outside of any path the secret Nanda Devi expedition would have taken.

The rumour supposed that perhaps the plutonium capsules (which continue to generate heat by radioactive decay, since that's their purpose) had melted through ice and the meltwater deluged downstream. It's not improbable that this may happen someday, or that their presence perhaps already contributes meltwater into the Rishi Ganga, but the location of their demise is not the tributary valley where the February 2021 flood appears to have originated.

Part of the confusion is that the origin point of the flood was not immediately known, only that it came from somewhere within the Nanda Devi Sanctuary, a large nature reserve area that shares the name with the famous mountain contained within.

Plutonium doesn't explode on itself. Unless you pack it into the complicated mechanism of a nuclear bomb device. Other than that you can do what you want, wrapping it in explosives and firing them will just disperse the plutonium but it will not make a chain reaction.

I'm no expert on the subject, but do you think the plutonium being buried under several tons of ice could cause it to explode?

My layman’s understand is you need a neutron trigger to destabilize it rapidly, as well as a shell to contain it to get a stable chain reaction going. I think you typically need to be at the center of a an exploding star to see that happen just from pressure.

"Radioisotope thermoelectric generator" is what you want to understand. There are plenty of youtube videos on this topic.

They can't explode though.

yeah, there is a definite asymmetry for sure. Bad guys have to get it right once and good guys have to get it right everytime.

Eugene mentions that the algorithm is the one that built this latent interest graph and this algorithm itself is worth a lot of money. Given that most personalization is using ML/Deep Learning and various video features like scene descriptions, object identification in each scene etc, Is it really that proprietary to warrant this level of premium. Once the awareness of interest graph could be built to this level of efficiency using usual techniques, Is the algorithm and approach exclusive to TikTok ?

Awesome Insights from Eugene !!

Are they pricing it for the pop ? Seems like the valuation will be between 7B and 8B, well below 10B of the last round.

i thought Daphne Koller taught CS228. probabilistic graphical models. It was very very grueling when i took it in 05.

Daphne has a PGM course on coursera as well. From the half dozen courses I have done on coursera that was by far the most difficult one, to the point where people were talking about making t-shirts stating "I survived week 5". Personally I found it the most interesting and rewarding as well.

Oh yes my bad. I meant to say I took Andrew's CS229, and Daphne's CS228. I never took CS221.

I particularly like the concept of 'Day 1'. No matter what stage you are in as a business or individual, it is still day 1 for rest of your life. Taking long term view , keeping where you want to go in focus is really important.

I always thought "it's day one" sounded like something a man says to his wife after he's been caught having an affair.

No, that is called judgement day

It looked so routine, therefore so exciting.

from the quick read, it looks like a spear phishing attack at the root of it. --- According to the report by the FBI and DHS, the hackers involved in the Russian operation used fraudulent emails that tricked their recipients into revealing passwords. --- This incident should be investigated thoroughly and serious defenses should be put in place. Destabilizing the electric grid like the Kiev incident shouldn't be allowed.

Yeah I'm surprised 2FA isn't the norm with organizations that work with the government or control infrastructure. The idea of just using a password is fairly idiotic. They're too easy speared and cracked.

What's preventing the bad guys from phishing a 2FA token on their fake login page too?

It should make it harder because you have to run the attack based on the user interaction timing, you can't just capture and hold credentials for later.

No doubt, but that's hardly an obstacle for an even moderately sophisticated attacker. I don't know what the magic bullet answer to phishing is, but this ain't it.

Usually 2FA is only at the perimeter where you have legacy or embedded systems.

There's always a way in.

A quote from this long article.. --- “Now you know what makes theoretical physics so hard,” he said. “It’s not that the problems are hard, although they are. It’s that knowing which problems to try and solve is hard. That, in fact, is the hardest part.” --- As with startups, all startups are hard but knowing which one to pursue and give life is very hard.

Same with gamedev. Ask anyone who is into it how many ideas for games they have (heck just tell someone you make games and they'll likely tell you an idea they had for a game they want to see made). Figuring out which one could be a success in terms of fun, popularity, or finances, is the question. Which is why rapid prototyping of core mechanics to "find the fun" is so critical.