Robo-advisors have seen a drastic rise in popularity since their debut more than 10 years ago. Today, robo-advisors manage USD 460 billion worth of assets, with some analysts predicting this will rise to USD 1.2 trillion by 2024. At the same time, some believe that robo-advisors will never (fully) replace the human element. Explore these thoughts and more in this illuminating video from CNBC.