R N I N G C H A N G E S T H E D E S I G N P R O C E S S Challenges for UX Design for engagement responsibly Today, algorithms typically score the relevance of social and news content. Major online services are fighting to hook people, grab their attention for as long as possible. Their business is to keep users active as long and frequently as possible on their platforms. They use techniques that promote addiction = hooking people endlessly searching for the next reward. That new power raises the need for new design principles in the age of machine learning.