A mind-bending new theory has reignited one of humanity's oldest questions: are we really in control of our own lives?

Most of us just accept that relationships lose spark over time. Intensity fades, the butterflies settle, and eventually you slide into something steady, comfortable, and routine. Meet parallel life ...

Forbes contributors publish independent expert analyses and insights. I write about relationships, personality, and everyday psychology. When people are plagued with regret, especially in the face of ...

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