But there's nothing like seeing a culture up close, to understand first hand what it really means.
As a former US Army Captain and Iraq veteran, I understand first hand the challenges our national security apparatus will face when dealing with this growing threat.
Who understand first hand that any child can descend into darkness, as surely as they can be gripped by cancer, or felled by a random bullet.
That's not to say it's easily done, however, as the 140-plus people that signed up for last year's jam understood first hand.
I am writing this piece because I want to protect the new republic that the U.S. pushed hard for, because I am a survivor in our second war with North Sudan, and because I understand first hand the horrors of violence, and I want to protect our future generations from the same nightmares I experienced.
Ms. Forbes understands first-hand why demand is growing.
She recalled times when a young relative of a geriatric patient "is hammering me with questions, and the patient is looking on in horror and pulls me aside and says, 'She's usually a nice person.' " Dr. Lavizzo-Mourey understands first-hand how being a minority can affect the quality of health care.
Infosys understands first-hand the huge amount of work and energy that goes into maintaining large legacy systems, whether computers or mechanical systems like turbines, locomotives and airplane engines.
The app was thought up by Match Product Manager Patricia Parker, who understands first-hand both the challenges and the benefits of online dating – Parker met her husband online, so has direct experience in the world of online dating.
Kathleen Dunlop, Marketing Director for Vaseline® at Unilever understands, first-hand, how purpose-driven companies, people and brands drive profits while promoting positive change.
I wonder if this is because she understands first-hand what many of the women and girls we meet are facing, She, too, grew up in a small village three hundred kilometers outside of Ulaanbaatar where she dreamed of a brighter future.
