When Richard Thaler pub­lished Nudge in 2008 with co-author Cass Sun­stein, the world was just start­ing to believe in his brand of behav­ioral eco­nom­ics. How did nudge the­o­ry hold up in the face of a glob­al finan­cial melt­down, a pan­dem­ic and oth­er exis­ten­tial crises? With the pub­li­ca­tion of a new, rad­i­cal­ly updat­ed edi­tion, Thaler tries to per­suade Stephen Dub­n­er that nudg­ing is more rel­e­vant today than ever.