The “Fourth Industrial Revolution” is a common phrase at the World Economic Forum’s annual meeting in Davos, Switzerland. But what exactly does it mean? CNBC’s Elizabeth Schulze explains. ----- Subscribe to us on YouTube: cnb.cx/2wuoARM Subscribe to CNBC Life on YouTube: cnb.cx/2wAkfMv Like our Facebook page: www.facebook.com/cnbcinternational Follow us on Instagram: www.instagram.com/cnbcinternational/ Follow us on Twitter: twitter.com/CNBCi