That has to be a lesson worth learning.

NEWYORKER: Lost in La Mancha

Early in your career the learning is worth far more than the salary.

FORBES: Growing Gap Between What Business Needs and What Education Provides

But is learning moderately good Chinese worth the opportunity cost?

ECONOMIST: The craze for teaching Chinese may be a misguided fad

His greatest gift to humanity is a well-documented life, proving that integrity, transparency, hard work, and continual learning lead to a life worth living.

FORBES: Warren Buffett: 7 New Bits of Wisdom for Your Life

It's also worth pointing out that there is somewhat of a learning curve for first-time users.

ENGADGET: Nuance Dragon Dictate 2.5 for Mac review

For those that are worth doing, but not worth measuring , they agree to hold marketing accountable for testing-and-learning on ways to show, even if partially, how that activity connects to economic value.

FORBES: Demonstrating the Value of Marketing

But learning to share the pictures with friends takes more effort than it is worth.

WSJ: Are Multipurpose Devices Better Than Products That Perform One Function?

Randy Weingarten of the AFT suggested a specific idea: community schools, especially in rural areas, where parents can get training after hours in the same place where their kids are learning during the day, and I think that's a terrific idea worth exploring.

WHITEHOUSE: President Obama Closes Forum on Jobs and Economic Growth

Mastering original jet fighter technology is a challenge and learning about one of the hottest battles of the Cold War makes it a simulation worth flying.

CNN: Fly back to the Cold War with MiG Alley

"Having lived most of my life under the radar, my learning curve was steep, " she added, saying the photo caused more trouble than it was worth.

CNN: Plame Wilson: Leak severely hurt U.S. intelligence