Procter & Gamble Co.’s “Thank You Mom" campaign had its beginnings not so much in strategy or creativity as in opportunity...

When something is pushed far enough, it becomes original again. True to the name, Adidas continue the message of ‘Original is never finished’. Now with the help of a new set of creators — Eason Chan, Chen Man, Meng Jia, Kendall Jenner, James Harden, 21 Savage, Young Thug, and Playboi Carti — and new cultural contexts, scenes from the original film are reimagined, their way, with a new take on the iconic Frank Sinatra track. Proving once more that #ORIGINALis never finished. Out of repetition, comes variation. Out of variation, comes iteration. Out of iteration, comes creation...

In his memoir, “Possibilities,” Herbie Hancock describes the single most illuminating moment in his jazz career. It came when he was very young, playing keyboard with Miles Davis. During the show, Hancock suddenly played a chord he called, “so wrong” that he was stunned into momentary silence. “But Miles didn’t judge it,” he said in an interview with Jared Bowen. “He paused and played a few notes that suddenly made it work.” It took years for Hancock to integrate that moment into his personal musicianship—to learn not to judge the work—but it changed everything he did. The concept of going into the unfamiliar in art has fascinated me for a while—I even wrote an awkward analysis of Neil Young’s forays in a post called, The Unexpected Note, when I had even less knowledge of music. But I think the arts are all connected, and we will get to the answers sooner if we take multiple routes.

Advertising Age is updating this list with 15 of the best ad campaigns of the 21st Century. In the last 15 years, advertising and marketing, and the media it used to get out its messages, has experienced an incredible upheaval as digital media and interactivity changed the dynamics of how consumers see and pay attention brand messages. Advertising Age tapped the expertise of leading creators and marketers to derive this list of 15. They asked our judges to consider three criteria: 1. Was it a watershed ad or campaign, discernibly changing the culture of advertising or the popular culture as a whole? 2. If it itself was credited with creating a category, or if by its efforts a brand became entrenched in its category as No. 1. 3. Was it simply unforgettable? Red Bull insists its mega-stunt, dubbed “the mission to the edge of space,” was not an advertising campaign. And that’s exactly why the ad and marketing industry can’t get enough of it. Indeed, in an environment where it’s incredibly hard to capture consumers’ attention, an energy drink managed to captivate the world with its Stratos project. In October 2012, Red Bull helped Austrian skydiver Felix Baumgartner freefall jump from 24 miles above the earth, breaking five records, according to officials at Guinness World Records. Mr. Baumgartner became the first human to break the sound barrier without engine power.

Brandon Li spent a month in Seoul and saw a city racing to the future. Here's the film he made with the help of the great people he met along the way...