I think if you had picked any other example you'd have been correct, but many current-day AI advances are based on decades old techniques. One caption from an article about Geoff Hinton states: "This publication from the mid-1980s showed how to train a neural network with many layers. It set the stage for this decade’s progress in AI."[1]

[1] https://www.technologyreview.com/s/608911/is-ai-riding-a-one...