Yasantha Rajakarunanayake Profile Banner
Yasantha Rajakarunanayake Profile
Yasantha Rajakarunanayake

@yasantha62

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Technologist, Scientist, Engineer. Plain living, high thinking..

San Ramon, CA
Joined September 2012
Don't wanna be here? Send us removal request.
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@yasantha62
Yasantha Rajakarunanayake
6 years
Wow! Jeff is talking about me. Amazingly he remembers interacting with me 34 years ago. What a memory! Also no Amazon if it weren’t for this, since he decided not to pursue physics!
@PodiMalli
Podi Malli
6 years
WATCH! The world richest man and Founder & CEO of Amazon, @JeffBezos Explains how a Srilankan guy, Yoshantha, helped him to solve most difficult math problem when he was in Princeton university. and why Srilankan names are three lines long 😄 #lk
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@yasantha62
Yasantha Rajakarunanayake
8 months
@lexfridman @JeffBezos I am Yasantha, Jeff’s college friend from Princeton that solved the cosine problem! I am very grateful to Jeff for speaking so fondly of the interaction with me 40 years ago. I too am an inventor of over 100 patents, and now an AI scientist in Silicon Valley. Thanks 🙏
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@yasantha62
Yasantha Rajakarunanayake
6 years
The problem with Srilanka and the constitution is that no one teaches it in school. The history study ends in 1948 after the independence. If we teach the children importance of the constitution, more people would take it seriously, and protect it.
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@yasantha62
Yasantha Rajakarunanayake
6 years
@Riekekraemer Indeed. Back in college, Jeff and I were just fellow students, and no one could have predicted what future would hold for us. Jeff remembers me as smart, humble and speaks fondly simply because I helped him with his homework.
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@yasantha62
Yasantha Rajakarunanayake
5 years
A table fan made by East India Company from 1845 (before electricity) still works.. This is by far the oldest gadget I have seen. What about you?
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@yasantha62
Yasantha Rajakarunanayake
6 years
Many of you inquired what I am doing now. I have contributed as a research scientist for many years with several inventions (patents). I came to America not to pursue money, but the pursuit of best education and knowledge. This article has a summary.
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@yasantha62
Yasantha Rajakarunanayake
6 years
Thank you Jesse. Indeed it’s always good to be helpful and nice. I am glad Jeff embellished the memories after so many years, and pivotal impact of even a minor thing as help on a homework problem.
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@yasantha62
Yasantha Rajakarunanayake
6 years
@haroldpollack Harold, amazing. You too remember me from Physics class. It was Fall 1982. What are you doing now, and what have you been up to? I am going to look you up in our freshman yearbook!! But I do vaguely remember you 😀 Twitter is so cool.
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@yasantha62
Yasantha Rajakarunanayake
6 years
I thought only Sri Lankan’s spoke ‘Singlish’ (Sinhala English). Not true. I met a Singaporean who also claimed he speaks Singlish, though its ‘Singapore English’. Makes me wonder what do Indians speak.. Inglish? 🤔
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@yasantha62
Yasantha Rajakarunanayake
6 years
@iBmbo Unfortunately I don’t remember that detail much. Hope Jeff can one day remind us. He says the answer is a cosine!
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@yasantha62
Yasantha Rajakarunanayake
6 years
@Jesse_Livermore Wow! Jeff is talking about me. Amazingly he remembers interacting with me 34 years ago. What a memory! Also no Amazon if it weren’t for this, since he decided not to pursue physics! Cheers!
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@yasantha62
Yasantha Rajakarunanayake
6 years
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@yasantha62
Yasantha Rajakarunanayake
6 years
@mayankdhingra @PO5IT1VE I will try to get in touch. But his PR department will screen everything.
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@yasantha62
Yasantha Rajakarunanayake
6 years
A one page calendar for 2019
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@yasantha62
Yasantha Rajakarunanayake
4 years
To all of us working from home for pandemic. Issac Newton moved back to his home town from Cambridge at age 24 to avoid the plague of 1665. That is when he observed the "Apple fall down” leading to discovery of the theory of gravity and calculus. Now you are inspired! Good luck.
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@yasantha62
Yasantha Rajakarunanayake
4 years
Beef banned in SL. Holy cow! A cock and bull story? Bullshit or a cash cow for the MPs? I make no bones about it. Don’t be bulls in china shops. Take the bull by the horns and shout till the cows come home or until the cow jumps over the moon, or say Moo for this sacred cow? 🐄
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@yasantha62
Yasantha Rajakarunanayake
6 years
We are all stardust! Carl Sagan once said, “The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.” Atoms of our bodies are older than the sun! 🤔
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@yasantha62
Yasantha Rajakarunanayake
4 years
With the recent election mandates should we rename Srilanka to Rajapak-istan?
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@yasantha62
Yasantha Rajakarunanayake
6 years
@Forthespacemen I do feel bad for the plight of mom and pop shop demise by Internet giants like Amazon. But that’s technological progress and happening even in poorest countries (e.g. India). But think if you did not have Amazon, you would all be shopping at Walmart! That’s not so appealing.
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@yasantha62
Yasantha Rajakarunanayake
6 years
@annkirschner When I first came to the US, as a foreign student, I didn’t know the culture well, poor English, and didn’t know cool jokes etc. to make friends. So I helped lots of students with difficult homework, and it made me ton of appreciative and lasting friendships @annkirschner
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@yasantha62
Yasantha Rajakarunanayake
6 years
“Don’t believe in anything because you have heard it, or spoken by many, or written in books, or on authority or on tradition. But observe and analyze, and when you find it agrees with reason and is to the benefit of one and all, then accept it and live up to it.” -Buddha
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@yasantha62
Yasantha Rajakarunanayake
6 years
These words were true from the time of the Greeks. Before democracy, before the constitution.
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@yasantha62
Yasantha Rajakarunanayake
6 years
A gigantic water reservoir near a black hole. 140 trillions earths full of water. Makes me think there must be water based life there. Otherwise what a waste... NASA - Astronomers Find Largest, Most Distant Reservoir of Water
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@yasantha62
Yasantha Rajakarunanayake
5 years
Here is a cool math puzzle. Express each number with four fours.. and common symbols. First 20 numbers shown below. How high can you go.. consecutively without gaps using same rules
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@yasantha62
Yasantha Rajakarunanayake
6 years
Great reminder about democracy!
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@yasantha62
Yasantha Rajakarunanayake
6 years
On @YouTube there are some awesome Math channels I like ( @numberphile @Mathologer @veritasium ). This will broaden your mathematical thinking. A broad foundation of mathematical intuition is key for success. @yasantha62
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@yasantha62
Yasantha Rajakarunanayake
6 years
In theory there is no difference between theory and practice, but in practice there is.
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@yasantha62
Yasantha Rajakarunanayake
4 years
@anafabrega11 Present school system is over 200 years old. It was designed to make factory workers and support colonial expansion. They learn obedience, loyalty, following rules and keeping up the status quo. Original thinking, innovation, and doing things differently are not taught there.
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@yasantha62
Yasantha Rajakarunanayake
4 years
Look what I found.. could be a rare historical document for Srilankans 😊
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@yasantha62
Yasantha Rajakarunanayake
4 years
A simple puzzle to keep your observation powers in check.. Observe pictures very carefully
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@yasantha62
Yasantha Rajakarunanayake
6 years
@JeffBezos Jeff, I saw your Economic Club of DC interview, and you mentioned me by name ( I am your Sri Lankan friend from Princeton days - Yasantha). Thank you for the kind words. Would love to touch base with you sometime. Wish you all the best! - Yasantha
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@yasantha62
Yasantha Rajakarunanayake
6 years
@RonWechsler Excellent compliment. Of course @JeffBezos Jeff is not only rich but he earned it himself by being smart as well. But given the choice to be smart or rich - which one would you choose?
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@yasantha62
Yasantha Rajakarunanayake
6 years
@TomiLahren Wouldn’t the founding fathers be all British by your logic? Being born here is the only requirement we impose even on the president. Not who or where their parents are from.
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@yasantha62
Yasantha Rajakarunanayake
5 years
Here is a small math problem for you. What is the answer? Remember we are all getting old, and need to keeps our minds and observation skills sharp.
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@yasantha62
Yasantha Rajakarunanayake
6 years
@haroldpollack Awesome! Good luck pal. I am following you now!!
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@yasantha62
Yasantha Rajakarunanayake
6 years
Try to name a few countries without an ‘a’ in its name. There are only a dozen or so.
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@yasantha62
Yasantha Rajakarunanayake
6 years
@haroldpollack I looked you up in 85 Princeton freshman herald and found you! That awesome 👏 😎
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@yasantha62
Yasantha Rajakarunanayake
3 years
Patrick Henry: give me liberty or give me death. Anti vaxxers: give me liberty and give me death!
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@yasantha62
Yasantha Rajakarunanayake
6 years
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@yasantha62
Yasantha Rajakarunanayake
6 years
Migrant caravan!
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@yasantha62
Yasantha Rajakarunanayake
6 years
Happy Thanksgiving! 🦃🍁
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@yasantha62
Yasantha Rajakarunanayake
6 years
@billmaher A real caravan of immigrants.
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@yasantha62
Yasantha Rajakarunanayake
1 month
I made an interesting tabletop board game. Currently I am running a kickstarter campaign for my very first board game. It is a strategy game that requires you to balance materialism with spirituality. I hope it helps the younger generation learn to balance competition with
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@yasantha62
Yasantha Rajakarunanayake
6 years
@cassidoo Actually vim is the younger brother of vi who is at least 40!
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@yasantha62
Yasantha Rajakarunanayake
5 years
True..
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@yasantha62
Yasantha Rajakarunanayake
6 years
My favorite Singlish phrases are: I’ll go and come, Put the light, and Rustified the whole day. What are yours?
@yasantha62
Yasantha Rajakarunanayake
6 years
I thought only Sri Lankan’s spoke ‘Singlish’ (Sinhala English). Not true. I met a Singaporean who also claimed he speaks Singlish, though its ‘Singapore English’. Makes me wonder what do Indians speak.. Inglish? 🤔
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@yasantha62
Yasantha Rajakarunanayake
2 months
I made a strategy board game. The link to support it is here. Please forward it to board game enthusiasts. I wanted to make a game that was not only hogging wealth and power for victory but a little bit of charity and seeking spirituality for victory.
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@yasantha62
Yasantha Rajakarunanayake
6 years
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@yasantha62
Yasantha Rajakarunanayake
6 years
Lankan who solved maths problem for Jeff Bezos and gave world Amazon @yasantha62 @Princeton #sl
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@yasantha62
Yasantha Rajakarunanayake
5 years
I didn’t know half of these. Do you know more of these collective nouns?
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@yasantha62
Yasantha Rajakarunanayake
6 years
“I think. Therefore I am.” - Descartes, a cornerstone of western thinking. But why is “I am. Therefore I think” not equally profound? Shouldn’t it be circular, combining both these as in the eastern way of thinking. 🤔
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@yasantha62
Yasantha Rajakarunanayake
4 years
Your astrological/horoscope forecast for March 21-28. I promise it’s accurate this time 😊 *Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio,Sagittarius, Capricorn, Acquarius, Pisces*: You will be spending time in your home and distancing from others.
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@yasantha62
Yasantha Rajakarunanayake
6 years
Dr. Yasantha Rajakarunanayake: “the smartest guy at Princeton” “the-smartest-guy-at-Princeton”
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@yasantha62
Yasantha Rajakarunanayake
6 years
@HardcoreValue @JeffBezos When I first saw the interview, I ran upstairs and shared with my wife and daughter. They were delighted! Although I had a Twitter account for six years, I only used it to read news. I had never tweeted to public before. That moment I did my 1st tweet which went viral!
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@yasantha62
Yasantha Rajakarunanayake
6 years
@chameerayap @Princeton Sure. I have been involved a bit on science and technology for Sri Lanka. In 2016, I was invited by Sri Lanka government to participate in Science and Technology for Society forum. Even took a selfie with the president!
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@yasantha62
Yasantha Rajakarunanayake
6 years
Srilankans should not be surprised at political back stabbing and usurping of power. Mythological founder of the Sinhala people, ‘Sinhabahu’ killed his father to take power. The founding 1st king of SriLanka (Vijaya) also killed his father-in-law to take power..
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@yasantha62
Yasantha Rajakarunanayake
6 years
You can actually play your own music by moving your fingers on this image. Impressive. Let’s have fun.
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@yasantha62
Yasantha Rajakarunanayake
6 years
I read this sign on the freeway today, “Robots and AI can’t take your job if you are retired”. Very true. #AI , @yasantha62 , #Robots
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@yasantha62
Yasantha Rajakarunanayake
4 years
Don’t know who created this. But very clever!
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@yasantha62
Yasantha Rajakarunanayake
1 year
My podcast interview on AI with Gita Wirjawan on Endgame!
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@yasantha62
Yasantha Rajakarunanayake
6 years
@PraveenBJPdelhi Guys I am sorry - my Indian friends. I did not mean it that way. I apologize, and my bad. I didn’t mean India is poor, but that technology is sweeping the entire world.
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@yasantha62
Yasantha Rajakarunanayake
5 years
Please support my friend Kumar’s family after his sudden passing away. This story is common, where family does not have means to make ends meet after Dad’s death. Could happen to any of us. I have setup the daughter as beneficiary. Thank you.
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@yasantha62
Yasantha Rajakarunanayake
4 years
@a_sangott Till junior year perhaps. He mentioned about quantum mechanics..
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@yasantha62
Yasantha Rajakarunanayake
6 years
@BobbyAxelrod__ @JeffBezos Good question. I knew of Amazon and invested on and off since 1998. Sold after the crash of 2000, rebought and resold.. Should have kept and held AMZN and trusted @JeffBezos genius. I did make good money, but had I kept it - could have been as good as winning the lottery!
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@yasantha62
Yasantha Rajakarunanayake
4 years
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@yasantha62
Yasantha Rajakarunanayake
2 months
I am the Srilankan guy, Yasantha @JeffBezos talks about who helped him in maths at @Princeton . I have created a new strategy boardgame called Vediic. A little bit of a space time optimization game based on wandering planets. 😄 #lk
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@yasantha62
Yasantha Rajakarunanayake
4 years
Westerners too did wear simple masks in 1919 for Spanish Influenza (No N95 then).
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@yasantha62
Yasantha Rajakarunanayake
6 years
@bundeljayse Politicians! The worlds second oldest profession, which closely resembles the first.
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@yasantha62
Yasantha Rajakarunanayake
6 years
Here is an old Srilankan prime minister SWRD, articulating a policy to BBC. I don’t agree with the policy, but he does it with a pleasant English accent, with more class than current politicians.
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@yasantha62
Yasantha Rajakarunanayake
6 years
No sign of life on Mars. Only Robots! #Mars
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@yasantha62
Yasantha Rajakarunanayake
6 years
@whoisSheena It takes a village to raise a kid. Isn’t this just giving back to the village that raised you? I think this is common to asians and other minorities as well, and poorer white families too.
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@yasantha62
Yasantha Rajakarunanayake
6 years
Found this incredibly beautiful and peaceful Sanskrit chant, and thought of sharing with you’ll. Should help when agitated, pissed off or wrathful as often the case reading our twitter feeds. Take your time, relax and enjoy!
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@yasantha62
Yasantha Rajakarunanayake
5 years
Hmm, makes you think.
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@yasantha62
Yasantha Rajakarunanayake
7 months
@ChrishanJay This is a good point. Sri Lanka must build its institutions and allow meritocracy to thrive for success. Mentality of jealousy can be countered with new opportunities and new ideas.
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@yasantha62
Yasantha Rajakarunanayake
6 years
A whole list of men: can’t men, don’t men, just go men, yes men, no men, why men, what men, etc. 😂
@yasantha62
Yasantha Rajakarunanayake
6 years
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@yasantha62
Yasantha Rajakarunanayake
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I have created a new strategy board game. Vediic: The Cosmic Strategy Game Vediic is a strategic board game for 2-7 players that ingeniously intertwines materialism with spirituality, combining elements of both competition and cooperation. As players navigate the board, their
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@yasantha62
Yasantha Rajakarunanayake
5 years
All global debt (public and private) has surged to $250 trillion. There is no god, or alien that humanity owes this to. Can’t we reset? It would just be broken promises. Ancient societies did this every 50 years, and called it the Jubilee. Why not now?
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@yasantha62
Yasantha Rajakarunanayake
6 years
Do you know Scott Free? Trump humorously misspelled the term scot-free, which refers to avoiding punishment, in such a way where it seemed like he was instead referencing a person named Scott Free.
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@yasantha62
Yasantha Rajakarunanayake
6 years
Why we are often ruled by fools.. according to Plato
@yasantha62
Yasantha Rajakarunanayake
6 years
These words were true from the time of the Greeks. Before democracy, before the constitution.
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@yasantha62
Yasantha Rajakarunanayake
6 years
Here is my webinar on AI
@kavindya_T
Kavindya Thennakoon
6 years
@yasantha62 is running an amazing / concise Facebook live session on inspirational applications of #AI Tune in now: #lka @goasksef
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@yasantha62
Yasantha Rajakarunanayake
4 years
I was just thinking if Ozone could kill the Corona virus? @coronavirus I don’t know. But if there is a concentration that humans can tolerate, but airborne viruses could not.. then we could invent an inhaler to fix these epidemics like the Corona virus! Anybody know?
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@yasantha62
Yasantha Rajakarunanayake
6 years
@HardcoreValue About 24 hours after the @JeffBezos interview, I got a lot of messages on LinkedIn asking ‘are you Jeff Bezos Yoshanta?’. They had misspelled my name and Apostrophe on Bezos was missing. I thought I had been hacked! I carefully checked the link and was pleasantly surprised!
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@yasantha62
Yasantha Rajakarunanayake
4 years
What is the Sinhala word for cute? Why is there no 100% analogous simple word for this concept? Do Tamil or other Indian languages have one?
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@yasantha62
Yasantha Rajakarunanayake
6 years
Equally important is for parents to answer the endless stream of questions from their young ones to the best of their ability, to encourage imagination and curiosity. An excerpt from my op-ed for @UNICEF , on World Children’s Day, November 20th.
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@yasantha62
Yasantha Rajakarunanayake
6 years
@NalakaG Remember that politicians are the worlds second oldest profession, which resembles the first.
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@yasantha62
Yasantha Rajakarunanayake
4 years
Anybody know what this language is? Some old Indian language?
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@yasantha62
Yasantha Rajakarunanayake
4 years
Is the United States already a plutocracy? Compared to Ancient Rome, (the classic example) top 1% controlled 16% of the wealth. In modern USA top 1% controls 40%. But China and U.K. and many modern countries, and world average is worse than Rome. Why is this..
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@yasantha62
Yasantha Rajakarunanayake
6 years
The origins of job interviews..
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@yasantha62
Yasantha Rajakarunanayake
6 years
You realize this cloud has enough water to give “earth’s oceans” worth of water to each star in 700 Milky-way sized galaxies. Its at 90% to the edge of the observable universe, and old. If life originated there, it would be many billions of years more advanced than here earth!!
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@yasantha62
Yasantha Rajakarunanayake
6 years
Weirdest thing. Foreign Accent Syndrome.. One day you can wake up with a foreign accent. No joke. It seems to be caused by migraine or epilepsy induced speech disorder.
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@yasantha62
Yasantha Rajakarunanayake
6 years
It was a privilege to say a few words on ‘World Children’s Day’ on behalf of Unicef. I am always a fan and supporter of Unicef. Keep up the great work. @UNICEF @UNICEF_SriLanka
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@yasantha62
Yasantha Rajakarunanayake
6 years
GMO humans now a thing. It is like the proverbial eating of the Apple in the garden of Eden. Not surprised that someone explored outside the ‘ethical norm’. 2-Chinese babies with added HIV resistance. Scary!
@WIRED
WIRED
6 years
Late Sunday night, a Chinese researcher stunned the world by claiming to have created the first human babies, a set of twins, with Crispr-edited DNA. Permission to push the panic button granted.
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@yasantha62
Yasantha Rajakarunanayake
5 years
Kudos @skamarasinghe ! Here is a list of expressing numbers up to 40 with Five Fives. A variation of the Four Fours puzzle..
@skamarasinghe
Sisira K Amarasinghe
5 years
@yasantha62 @thomjalab Here’s my list up to 40:
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Yasantha Rajakarunanayake
3 years
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@yasantha62
Yasantha Rajakarunanayake
5 years
Looks like we can extend the pattern up to 33. Very interesting puzzle.
@yasantha62
Yasantha Rajakarunanayake
5 years
Here is a cool math puzzle. Express each number with four fours.. and common symbols. First 20 numbers shown below. How high can you go.. consecutively without gaps using same rules
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