But perhaps there is a lesson to learn from Nickelback on how to be more likeable.
For Friedman, this was a tough lesson to learn, coming from the ego-driven world of television.
We believe that Africans and our neighbours have a lesson to learn from this wrong crisis management.
The wrong lesson to learn from liberal disappointment with Barack Obama is that you picked the wrong candidate.
But the right lesson to learn from this chapter in history is that government interventions carry real economic costs.
It's a tough lesson to learn: No one listens, everyone thinks they're invincible.
Whatever the change, if you pay attention to those around you it will be a fast lesson to learn in order to improve all relationships.
"In a sense, this is the biggest lesson to learn: that there really aren't heroes, " said Jason Richardson, a hurdler who won a silver medal in London.
But Ms Colby says the most important lesson they have to learn is how to manage their illness so that they ration their energy and do not suffer a relapse.
While there are certainly times when I felt justified in speaking up for myself, perhaps the hardest lesson I had to learn was knowing when to just let it go.
Now, of course, it's time for the Boy Scouts themselves to learn a lesson about adaptability one that I fear may be coming too late to save the group from its long decline in numbers and influence.
But the lesson that India needs to learn from this quintessence is different.
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The skills are essential across the board, and that is exactly the lesson that we need to learn in private industry.
As advocacy groups increasingly use games to make their points, I fear that we will see more games where all decisions lead to the same outcome, and the same lesson that the advocates want you to learn.
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Executives who fail to learn this lesson are often let go despite their track record.
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History has taught us a painful lesson that we are poised to learn all over again.
Facebook did seem to learn a lesson from the December 2009 privacy debacle.
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It's not just foreign companies that need to learn this lesson.
"Now we need to sit and read the whole document, analyse it legally, " he said, adding that Poland "had to learn this lesson the hard way".
He earned loud cheers from delegates for attacking what he called Britain's "fast buck" culture - saying the country had to learn the lesson that "growth is built on sand if it comes from our predators and not our producers".
He seemed to learn a lesson at a Latin American summit this month, that agricultural subsidies in place in the US and other countries can really complicate new trade deals, and he wants nations to come to the table and discuss whether those subsidies are really needed, and he wants to use this summit to get those conversations really moving.
Some experts are therefore saying that the German people may have to learn a hard lesson.
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To learn the right lesson, see the special case of scaling and the special case of fast growth below.
Most importantly, it will need to learn the same lesson Apple and Facebook have -- HTML5 "apps" just don't cut it.
ENGADGET: Firefox OS is repeating the mistakes of others and hoping for a different outcome
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