Feb 272015

Sökningar på teman och tillägg

  • http://www.designmaz.net/question-and-answer-wordpress-themes-plugins/ Här gjorde jag mitt första val.
  • Q-and-A är ett tema som jag inte tycker verkar innehålla allt som jag behöver.
  • WP Answers verkar ha bra socialamedier-funktioner men levererar inte i grundfunktinerna som jag bedömer det.

Skrivet på Quora

  • http://www.quora.com/What-is-the-best-open-source-Q-A-software om Open Source program. Det verkar koka ner till att i så fall använda http://www.osqa.net. Förmodligen ett bättre resultat med ett fristående program men mer jobb än en plugin till WP. AnswerHub är deras professionella programvara.
  • http://www.quora.com/Can-I-build-a-site-like-Quora-on-the-WordPress-framework Tipsar om ett gäng tillägg/teman som jag inte hört om och i svar två rekommenderas CM Answers. Länk till  en  artikel om tekniken bakom Quora och den startar med en bra sammanställning av Quoras funktioner.

CM answers

Den som jag funderar på att byta till. Har shortcodes för delning och user profiles.

  • https://answers.cminds.com/pricing/

DW Questions and Answers

som jaga installerade och startade med

  •  http://www.designwall.com/guide/dw-question-answer-plugin/

Annat kul som kom upp



 Posted by at 6:46 e m
Jan 032015

Bra booktips för entreprenören.

Answer by A Quora admin:

The first thing I’d do is take the time to read at least half a dozen basic books on the whole ”starting a company” thing. Michael E. Gerber, Eric Ries, Steve Blank, Alexander Osterwalder, John Mullins, Bo Peabody, David Kidder, is a good list with which to begin. That will at least get you up to speed on what some really smart people think is important, give you all the basic terminology of the field, and hopefully prevent you from making a ton of rookie mistakes.

Next,  I’d take your nascent idea around and talk to several domain experts in your field, which will give you the beginnings of a reality check to see if your idea makes any kind of sense to people who know the industry you’re preparing to enter. What they tell you shouldn’t be necessarily dispositive…but it should definitely be taken into consideration.

Assuming the feedback you’re getting indicates that you’re on the right track, I’d start organizing your conceptual idea  into a more detailed plan, either by way of a business model canvas or a traditional business plan.

When you’ve got something you believe in, run it by a few mentors or advisors in the early stage field (angels or VCs, entrepreneursip professors, accelerator mentors, successful serial entrepreneurs, etc.) In contrast to the previous set of feedback (which was in the context of the domain) this set will give you a reality check on the idea as a business.

Assuming that all signals are still go, you know that you’ve at least got a plausible shot at a venture. Now it’s time for your initial market testing. Following the advice in books such as Cindy Alvarez’s Lean Customer Development and Gabriel Weinberg’s Traction: A Startup Guide to Getting Customers, see if any of your potential users might really be willing to pay for what you want to sell.  If your landing page, crowdfunding campaign or other market test comes back positive, you’re good to go.

[By the way, if at any of the above stages reality or sage advice suggests you’re off target, reformulate or pivot, and try again.]

Now is the time to jump in with both feet and Just Do It. Do the best and fastest job you can on getting an MVP to market. If it works, you’re on the way, and may be ready for angel (or at least Friends & Family) funding. If not, tweak, check with customers and try again. Before going out for funding, read some of the better books on the subject, including Bill Payne, Brad Feld, and perhaps even my own Angel Investing.

At this point, you’ve joined the grown up world, cut your entrepreneurial teeth, and are a full peer of all the rest of us entrepreneurial founders.

Good luck!

What would be David S. Rose’s advice for a 21 year-old starting a company?

 Posted by at 8:17 e m  Tagged with:
Dec 312014

Answer by A Quora admin:

Please tell those teachers that I pointed out that they don’t amount to much as educators.

It’s terrible that they’d tell you that that you ”wouldn’t amount to much in maths.” Given the role of confidence in academic performance, it’s the sort of statement that can easily become a self-fulfilling prophecy. I’m sure a lot of people would fail their exams if their teachers made such remarks to them.

Since you’re interested in mathematics, I’d definitely encourage you to pursue it. I’m not going to promise you a Fields Medal. Indeed, one thing to get used to with learning math is that there will always be people who seem to be better at it than you. I’m finishing up a PhD in math at a reputable university, but it’s rare that I talk to another mathematician without coming away thinking that the other person knows more than me, learns faster than me, and is generally just  much smarter than me.

The point here is twofold. First, when you think that somebody else is better than you are at something, that is your perception, rather than objective reality. Second, we all come to the table with different backgrounds and aptitudes, and that’s okay. You can learn whatever you want. Somebody else knowing more won’t take away from that. Learning is not a zero-sum game.

Start with what you know, and gradually work your way up to more difficult things. Don’t just read about math. Solve problems. A lot of people say good things about Khan Academy. Some people prefer to work from a book, and that’s fine, too.  In my experience, the most important thing is to work through problems on your own. If you get stuck, it’s fine to talk with other people and consult references, but don’t allow yourself to be convinced that you can do a problem until you can work through it from start to end without consulting people, solutions, or other references. But also realize that it can be okay to skip over some of the hardest problems and move onto a new topic. You can come back to those later.

Finally, you might appreciate this video of a math major talking about fear and learning math.

(Quora wanted me to answer this question because it was under the Failure topic. I must be an expert on the subject.)

I have failed every math exam at school. My teachers have always pointed out I wouldn’t amount to much in maths. Yet, I am very intereste…

 Posted by at 9:33 f m
Dec 272014

Answer by A Quora admin:

I was waiting that someone will ask it. Was sick of same question about computer guys, and programmers.

Let me tell you some-

  1.  \pi \neq 22/7
  2. 0.999999…….=1
  3. ‘Balls’ can be square too.


  4. Everything you can do with ruler and compass, you can do with compass alone. For more info read this- Geometric construction with the compass alone
  5. The most famous theorem of mathematics- Pythagorean theorem– whose NCERT proof troubles school kids most, has more than 500 proofs, may be more than 1000’s. Eli Maor wrote a book in which he showed 367 proofs that were  distinct enough to bother writing about separately. ” (The Pythagorean Theorem)”
  6. Yes, 1>0 needs a proof.


  7.  0 can be equal to  2 , if you work in field of characterstic 2 i.e.   \mathbb{Z}_2 .
  8. Jordan Curve Theorem- It is a very tough theorem to prove that every simple closed curve divides a region into two parts, ”interior” and ”exterior”.

  9. A mathematician Kurt Godel has actually proved that God exist!!
    The Proof-

    Gödel’s ontological proof

  10. A shape with finite volume must have finite surface area- False
    Gabriel’s Horn is an example.


  11. There are more rational numbers than there are integers- False
  12.  i^i is real number.

  13. The Fibonacci sequence is encoded in the number 1/89- ( 1/89 = 0.01 + 0.001 + 0.0002 + 0.00003 + 0.000005 + 0.0000008 + 0.00000013 + 0.000000021 + 0.0000000034  …)
  14.    Too much beauty in one pic..

  15.  1+1/2+1/4+1/8+ \ldots \ldots =2
    Joke based on thisInfinitely many mathematicians walk into a bar. The first says,  ”I’ll have a beer.” The second says, ”I’ll have half a beer.” The third  says, ”I’ll have a quarter of a beer.” The barman pulls out just two  beers. The mathematicians are all like, ”That’s all you’re giving us?  How drunk do you expect us to get on that?” The bartender says, ”Come on  guys. Know your limits.
  16.  1+1/2+1/3+1/4+ \ldots \ldots =\infty
    Joke base on this- An infinite number of mathematicians  walk into a bar. The first one orders a beer. The second orders half a  beer. The third orders a third of a beer. The bartender bellows, ”Get  the hell out of here, are you trying to ruin me?”
  17. A pizza that has radius “z” and height “a” has volume Pi × z × z × a.
  18. If you shuffle a pack of cards properly, chances are that exact  order has never been seen before in the whole history of the universe.
    Explanation– A  deck of 52 cards can be ordered in  52! = 52 \times 51 \times 50 \times...\times 2 \times 1 ways. But 52! is a very large number: larger than 8 \times 10^{67} .

    How big is this number? Well, someone shuffling a deck of cards once per second since the beginning of the universe (believed to be about 14 billion years ago) would not have shuffled the deck more than  10^{18} times.

  19. Zero is even number.Three Interesting Theorems-
  20. The four-color theorem states that any map in a plane can be colored using four-colors in such a way that regions sharing a common boundary  (other than a single point) do not share the same color.
  21. Brouwer’s Fixed Point Theorem (implication) says that if  you take two sheets of paper, one lying directly   above the other.  If you crumple the top sheet (do not rip or tear the sheet), and place   it on top of the other sheet, then there must be at least   one point on the top sheet that is directly above the   corresponding point on the bottom sheet!  Do you believe   that?
  22. Hairy Ball Theorem (Real life implication)-   It states that given a ball with hairs all over   it, it is impossible to comb the hairs continuously and have   all the hairs lay flat.  Some hair must be sticking   straight up!

  23. It took Russell and Whitehead several hundred pages to prove that 1+1=2 in Principia Mathematica.
  24. Divisibility by 7-
    Remove the last digit, double it, subtract it from the truncated  original number and if the result is a multiple of seven, then so is the original number, keep repeating till number is small enough.
  25. Random walk theory– A result by Polya states that in one or two dimension, a random walker returns to the origin infinitely many times but only a finite number of times in dimension 3 (or greater).
    Thus they say- ”A drunk ant or a drunk man will always reach home but a drunk bird might not!Mathematician exclusive jokes-
  26. The B in Benoît B. Mandelbrot stand for Benoît B. Mandelbrot.
    (If you know a little about Fractals)
  27. My Favourite- ”A comathematician is a device for turning cotheorems into ffee.” (Hint look up Paul Erdos quotes).
  28. ”I went to visit him while he was lying ill at the hospital. I had come  in taxi cab number 14 and remarked that it was a rather dull number.  ”No” he replied, ”it is a very interesting number. It’s the smallest  number expressible as the product of 7 and 2 in two different ways.”-
    Hint- Ramanujan’s most famous story.
  29. Prof: ”Give an example of a vector space.”
    Student: ”V”
  30. Why did the mathematician name his dog ”Cauchy”? Because he left a residue at every pole. 😛
  31. The primary reason Bourbaki stopped writing books was the realization that Lang was one single person.
  32. ”Let epsilon<0.”
  33.  \int 1/cabin \ d(cabin)= Houseboat {Don’t forget the constant C (sea)}

May be I will add more later. Thanks!

What are some things that mathematics students know, but others don’t?

 Posted by at 8:01 e m
Dec 142014

Answer by Edmond Lau:

In 2009, Dr. Heidi Grant Halvorson made a surprising discovery in the science of motivation. She conducted a series of studies where she asked participants to solve a set of puzzles and problems. In one group — the “be-good” group — participants were told that their score reflected their “conceptual and analytical abilities.” They should try to solve as many problems as possible and aim for a high score to demonstrate how good they were. In another group — the “get-better” group — participants were told that each problem was a “training tool” and that they ought to “take advantage of this valuable learning opportunity” to improve their problem-solving skills. [1]

For some participants in each group, Halvorson also increased the difficulty level by introducing a few challenges. She interrupted participants to use up some of their allotted time. She threw in extra, unsolvable problems to frustrate them, without telling participants that the problems were unsolvable.

What surprised Halvorson was how the two groups dealt with the challenges. The ones in the “get-better” group remained unfazed and solved as many as problems in the challenging conditions as the easy ones. They stayed motivated and kept trying to learn. The ones in the “be-good” group, however, were so demoralized when they faced the challenges and obstacles that they solved substantially fewer problems than those who didn’t have to face them.

And those differences happened just because of how the initial goal was framed.

Define Mastery Goals, Not Performance Ones, For Difficult Problems

Halvorson’s experiments illustrate the difference between a mastery goal, where you aim to learn and get better at some skill, and a performance goal, where you aim to be good, either to demonstrate you’re talented or to outperform other people.

Your objective for a given problem can often be framed in either way:

  • Are you studying for tests to learn and to grow or to demonstrate your intelligence?
  • Are you spending years on a PhD to innovate in your research area or to because you think it’ll be a good stepping stone for your career?
  • Are you training for a 10K race to improve your own time or to beat the competition?
  • Are you working on side projects and brushing up your coding skills to become a better software engineer or to simply get a better-paying job?

The actions you perform to accomplish a mastery goal or a performance goal might be the same, but your motivation and your mindset will be quite different. When you’re focused on improving your own skills, rather than on demonstrating them, you’re less likely to get discouraged by obstacles, time pressure, or other unexpected challenges. You’ll believe that you can still improve and do better next time. You’ll have a growth mindset.

That’s not to say performance goals don’t have their place. Professor Dan Ariely conducted a series of experiments at MIT, the University of Chicago, and in rural Madurai, India. Subjects were asked to participate in a number of games and offered either a small, moderate, or large financial incentive for performing well on each particular game — a clear example of performance goals in action. For memory games, creativity games, or motor skill games, those offered a large financial incentive actually performed worse than those offered smaller ones. The only task where participants actually performed better when offered a large financial incentive was when they were performing the mechanical task of alternating keypresses on a keyboard as quickly as possible. [2]

Daniel Pink reinforces this idea in his book Drive, explaining that when there is a clear goal and when the problem can be solved by brute force, performance-based goals — especially those incentivized by a reward — work extremely well. It’s when the problems require some ingenuity or some mental effort, that performance-based goals and rewards start to backfire and reduce performance. [3]

Making This Research Useful

Set the right type of goal for the task at hand to get better results.

You’re better off setting a performance goal when you can brute force through the problem, particularly if there’s a reward at stake. For example, performance goals work well if you’re:

  • Triaging through a long bug or feature list.
  • Responding to a long backlog of personal emails or customer support emails.
  • Finishing a laundry list of chores around the apartment.
  • Mechanically grinding through any number of mindless tasks.

It can be helpful for each of these short-term tasks, where there isn’t much opportunity to master a new skill, to instead tie a reward to the completion of the task. If you get everything done, then you’ll treat yourself (or your team) to something nice. The performance incentive can help you get things done faster.

But for our long-term goals, we’ll stay much more motivated in the long run if we adopt a mindset where we’re aiming to master our skills rather than to hit a performance goal. For example,

  • Rather than focusing on getting promoted to a staff engineering position at your company, focus on improving your engineering skills and your ability to create meaningful impact.
  • Rather than training to win at some sport — whether it’s running, a tennis match, ultimate frisbee, etc. — train to become a better player or athlete.
  • Rather than joining at a startup to get rich, join because you’re passionate about the problem space and excited to learn from the journey.

You’ll notice that long-term goals framed in terms of performance tend to rely on external factors outside of your control (whether your manager promotes you, whether you’re better than your opponent, or whether your startup succeeds). When you let environmental circumstances play such a large role in your success, it’s much harder to stay motivated when you encounter obstacles, just like the puzzle-solving participants in Halvorson’s experiments. If you instead focus on your own learning and on getting better, you’re much more likely to overcome pain points and actually succeed.

This answer is based on a blog post I wrote on The Effective Engineer.

Photo credit: Libby Levi, What’s your motivation?


  1. Heidi Grant Halvorson, Succeed: How We Can Reach Our Goals, p64-68.
  2. Dan Ariely, et. al., “Large Stakes and Big Mistakes”, https://www.bostonfed.org/econom….
  3. Daniel Pink, Drive: The Surprising Truth About What Motivates Us, p60.

What are the best tricks to keep yourself motivated?

 Posted by at 10:56 e m
Dec 142014

Answer by Saurabh Gautam:

Stick this on your mirror. See the magic happen.

It compares where you end up if you improve by 1% every day for a year instead of going worse by 1% every day for a year.

Image source: The Internet

What are the best tricks to keep yourself motivated?

 Posted by at 10:56 e m
Dec 092014

Answer by Lidia Stanton:

Understanding the mammalian brain and nervous system makes it possible to (harmlessly) control the behaviour of people and animals using the principles of Operant Conditioning laid down by behaviourists. What are the benefits? You can keep your sex life exciting, change your partner’s perception of you from predictable to intriguing, make the children do chores around the house, eat their greens and always say ‘Thank you’ and ‘I’m sorry’, and successfully teach your pets toileting skills or fun tricks.

Humans’ and other mammals’ brains are extremely responsive to external modification of behaviour using either reflexive associations (classical conditioning – just think of Pavlov’s dog), or rewards and punishments (operant conditioning – surely you’ve heard of rats getting electric shocks if they didn’t push a lever). The mammalian brain in rats, cats, dogs, monkeys, and humans is built on similar lines, and neurons work pretty much in the same way. Even cleverest people will struggle to realise their behaviour is being shaped by someone observing them and pulling invisible strings.

TRY THIS SIMPLE TEST: Ask your friend to randomly state a series of words. Choose a particular category but don’t tell your friend what it is. Whenever your friend gives an example of this category (colours, numbers, proper names) say “Great. Wonderful!” Otherwise say nothing. Within a brief time, your friend should be giving mostly examples of your chosen category.

Why does it work? You have ‘rewarded’ your friend by praise when they said what you wanted them to say, and ‘punished’ them by your indifference, lack of reaction, when they failed to offer the correct answers.

The trick shows how operant conditioning works. It is useful in gentle steering people towards the goals considered universally beneficial for all members of the same group, e.g. family, but the key to success in behaviour modification is the frequency with which we ‘administer’ the rewards and punishments, not simply carrying the acts of conditioning.

Fixed interval – blue line

Logically, it would make sense to assume that, if we want expected results every time, we should alwaysreward good/gratifying behaviour, and alwayspunish the opposite reaction. Not so, according to behaviourists. Have you noticed that, if you treat someone every time they deliver, their interest gradually diminishes? Predictability is not a good motivator. Just think of what happens to children who get what they want every time, or what little effect your compliment has on your partner if you deliver it too frequently? What happens to the bedroom dynamics after sex becomes a highly regular, comfortable activity on a list of things to do before falling asleep? How motivated is our behaviour then? The number of our responses to the stimuli (e.g. sweets, praise, sex) becomes lower and lower until, one day, it may actually become extinguished. We may stop responding.

Variable ratio – red line

The best way to ensure someone’s interest in our behaviour modification game is rewarding them not in regular intervals (every time, every Saturday, or every …) but in irregular ratio patterns (so that they know it will happen – life shows it does happen – but they don’t know when). If you want your child to learn to always say ‘Thank you’, if you want your cat to always come home after you’ve shaken the dry food box, if you want your partner to always be excited about what the evening might bring in the bedroom – reward them occasionally, without any predictable pattern to keep their interest high. This is not to be confused with being mean, occasional rewarding is actually good for your relationship with your partner, child(ren), friends, neighbours, pet(s), etc. It keeps the relationships fresh and under control, should you wish to think of them that way.

Finally, think of gambling, or any form of dependency. Why do people become addicted to social media platforms, such as Facebook or Quora? The very high and steady response rate (time spent online) is due to not knowing when your post, answer, picture, will get likes/upvotes/great comments. The activity of following other people is rewarding in itself, but the fact that some of us spent disproportionally high amounts of time online shows that our behaviour can be modified in response to someone’s prediction about how people would respond to their idea. Social media are not successful because people like other people, but because people’s time spent online can be predicted and controlled. And this doesn’t start or end with social media. BF Skinner told us that long time ago.

What are some brain hacks that a neuroscientist or a psychologist knows that most people don’t?

 Posted by at 11:19 e m