Is it possible to predict a person’s future by linear regression? If you understand the individual enough, MAYBE.

Life is like a road. We will meet different people and face different issues. We do not always walk in the same direction, but usually take similar tactics or solutions, and a similar emotional response any time experience is repeated. If the person really does act in the repetitive ways described above, the resulting pattern could fit a linear regression that could predict his/her future.