可是看新闻，包括今天的新闻，还是铺天盖地的google miss expectation，股价大跌什么的
Answer by A Quora admin:
An old teacher of mine told me a story that stuck with me the rest of my life:
A pottery teacher split her class into two halves.
To the first half she said, "You will spend the semester studying pottery, planning, designing, and creating your perfect pot. At the end of the semester, there will be a competition to see who's pot is the best".
To the other half she said, "You will spend your semester making lots of pots. Your grade will be based on the number of completed pots you finish. At the end of the semester, you'll also have the opportunity to enter your best pot into a competition."
The first half of the class threw themselves into their research, planning, and design. Then they set about creating their one, perfect pot for the competition.
The second half of the class immediately grabbed fistfulls of clay and started churning out pots. They made big ones, small ones, simple ones, and intricate ones. Their muscles ached for weeks as they gained the strength needed to throw so many pots.
At the end of class, both halves were invited to enter their most perfect pot into the competition. Once the votes were counted, all of the best pots came from the students that were tasked with quantity. The practice they gained made them significantly better potters than the planners on a quest for a single, perfect pot.
In life, the best way to learn a skill, is to make a lot of pots.
Update: It seems we've found the origin of the story…maybe. A very similar story was found inas well as a mention in . Thanks !
Do not conform to the pattern of this world, but be transformed by the renewing of your mind.
And be not fashioned according to this world: but be ye transformed by the renewing of your mind,
You should explicitly specify output type
cv::Mat gg; cv::reduce(testMat, gg, 0, CV_REDUCE_SUM, CV_64FC1);