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The Essence of "Controlled Experiment"

One of the hallmark of science is the presence of a control set in an experiment. Sometimes this modality is known as "randomized trial and error". Many science teachers in elementary schools are cognizant of that and always try to "teach" students what does "control set" really mean.  Alas, the nature of this "controlled experiment" technique is very subtle and not easy to be grasped. I myself made the mistake to gloss over it for decades. Until very recently I had an epiphany on the real essence of "controlled experiment". For example, if we want to know if water is a vital ingredient for photosynthesis, we build 2 sets of plants, one with water and another without (while keeping the remaining variables fixed for both plants). The corollary is that 1 of the 2 sets of plants must be able to grow. If it is the one with water hence it is self evidential that water is required, if it is the one without water then it is otherwise.  It so

What I wish I'd known when I was 20

  The following are some examples of things I wish I'd known or done when I was 20 in year 2013 (This advice is suitable for people who were born in year 2003 and beyond) - Be careful of popular things like law, medicine, accounting (translating into 2023 it might be something like web 3.0, crypto, data science). They are not necessarily bad, but think twice because you are gonna be sucked into the prestige magnet - Always aim for the super long term. Want to have a girlfriend/boyfriend? Ask yourselves if you could still live with such a person 10 years later? Want to choose a career? Ask yourselves could you stand doing that thing consistently for 10 years. If the answer is not a solid yes then they are not your right partner or your right career. - Dare to give harsh criticisms to friends and family. Being too nice to them in the short term by sugar coating is actually harming them in the long run. By being truthfully harsh to people around you, they also tell you the truth in r

Problem-solvers vs. Problem-solved-ers

I wish people talk more about the difference between a problem-solver and a problem-solved-er. The latter is a person whose sole motive is to get rid of problems at all costs. You would find such a person agonizes at every step and every second during the actual problem solving process. Never for a second he would marvel at the odd idea of "problems are fun as they challenge you and push your limits". "Equating the word 'problems' with 'fun'? You can't be any more lunatic!", he said.  The former, while caring about getting a problem solved at the very end (because otherwise he is just a lazy-bum who never gets anything done), derives equal amount of (if not more) delight from the apparently gnawing problem on his hand.  For a problem-solved-er, the sole reason to bend over backwards is the final reward of "problem solved". Anything before that is excruciating evil. For a problem-solver, the struggle during the problem-solving process is

Books I've Read

Check out my (digital) bookshelves at the link below: http://www.goodreads.com/chewpiinhuann

A Case for Vaccines Mandate

[Case 1: If Vaccines are Mandated] Chance of vaccines killing everyone on the planet: As low as the roof of your house falling on your head Chance of vaccines eradicating COVID-19: Not 0* Chance of governments tyrannically implementing a unanimous policy: Almost 100 [Case 2: If Vaccines are not Mandated] Chance of COVID-19 being eradicated: How is it even possible?^ Chance of COVID-19 (from at least 1 person) killing everyone on the planet: Not 0 Chance of individual liberties remaining impervious: 100 [Notes] * Those who allege that vaccines caused coronavirus mutation couldn't prove that "If there weren't vaccines coronavirus would never have mutated". ^ Saying "Darwinian elimination method (letting weaker people die from COVID-19)" is a "COVID-19 eradication method" is like saying "let cockroaches eating my leftovers" as a method of washing dishes.

6 Hypotheses on why Covid-19 pandemic might have been overrated:

6 Hypotheses on why Covid-19 pandemic might have been overrated: Note: The hypotheses are ranked based on their likelihood in descending order.  1) [Misattribution of deaths counter] The daily death numbers of covid19 patients might have died because of heart diseases, diabetes, stroke but mis-attributed (or sloppily attributed) to COVID19.   2) [Iatrogenics] If COVID-19 receives less public attention, people who contracted it would just rest at home instead of coalescing with other patients in hospitals (When we get normal flu, we don’t go to hospital). Staying at home alone heals the patient better, while putting all COVID-19 positive people together in hospitals made their situation worse.   3) [Anchoring problem] The Earth has 7 billion people. Malaysia has 0.02 billion people. Actually, before year 2020, every single day lots of people died because of illnesses, but we never felt them and never feared them, because they were almost never reported widely by any media. If you are no

Taxi Marathoners

I grow up witnessing hundreds of people around me talking about lotteries. Some of them are frequent purchasers while some, although proclaiming that "I only buy occasionally for entertainment purposes", are still mystically fervent to participate in any conversation about lotteries.   Those conversations typically consist of the following:  The amount of cash prizes if one wins An astronomical amount of hearsay stories about a person's friend's friend's cousin's friend's neighbour winning a 100,000 bucks of cash prize last month (Normally being received with a huge "Woah" by the listeners) A person's almost-winning attempt 3 weeks ago (E.g.: He/she bought the number "677839" and the winner number turned out to be "677838") and him/her claiming it as a near-miss like how Neymar missed a penalty kick The conversations almost never entail the following: Who was the founders of the lottery companies and how they were founded