Since Wikipedia these days is so easy to use and so useful to get information, I tend to spend time on it and I got over this part:

Weinberg’s Law of Twins states that most of the time, no matter how much effort one expends, no event of any great significance will result. Weinberg’s Law of Twins Inverted states that occasionally—particularly when one isn’t expecting it—a significant event occurs.

Gerald Weinberg invented the law and described it in his book The Secrets of Consulting (1986), in which he explains the origin of its name. He reported that, while riding a bus in New York City, he observed a mother with eight small children embark. She asked the driver the amount of the fare; he told her that the cost was thirty-five cents, but that children under the age of five could ride for free. When the woman deposited only thirty-five cents into the payment slot, the driver was incredulous. “Do you mean to tell me that all your children are under five years old?” The woman explained that she had four sets of twins. The driver replied, “Do you always have twins?” “No,” said the woman, “most of the time we don’t have any.”

I put this together with the focusing-defocusing need of a mental activity to become  efficient. You probably notice a lot when you try to resolve a problem, or find some keys in the house or keep thinking at something without any result initially. And when sometimes you get to another activity temporary: go to lunch, get fresh air, play a game etc, you suddenly find a solution to your problem.

Now I don’t know the Weinberg’s Law of Twins but my idea is that the two behaviors: 1)lack of productivity when trying too much 2)great results with small effort; happen in the same ecosystem(person). Who experienced the first will experience the second eventually.

Malcolm Gladwell has studied something similar. Read a description here:http://www.nytimes.com/2008/11/30/books/review/Leonhardt-t.html?_r=1 He describes  the stories  of many known people, where it looked that only luck helped them, while before that they spend a lot of time working for free and following their passion.

The same is in testing. Is another reason while test case way of working cannot be very productive. Test cases were invented out of the need of justification and measurably and coverage. But there are new ways to make these needs fulfilled better. The focus in test cases is limited and gives a wrong sensation of self-fulfillment where improvement is much slower than ET.

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