The gallery opened without announcement on a Tuesday in October, in a building in Prague that had been empty for nine years. No signage. No hours posted. You walked in because the door was open and because you had, for reasons you could not articulate, always wanted to see what was behind it.
Inside: photographs. Not of you — of the person you would have been if you had made the other choice. The one you almost made. The one you sometimes, at 3 a.m., still make in the version of your life that runs parallel to this one like a train on the adjacent track, close enough to see the passengers, too fast to read their faces.
A man who had become an accountant stood in front of his photograph for eleven minutes. In the photograph he was on stage, mid-bow, fingers bleeding into cello strings. His hands — his accountant's hands, clean, moisturized, insured — began to ache in the fourth minute. By the seventh, he could feel calluses forming on fingertips that had never held a bow. Phantom calluses. The muscle memory of a life he had not lived, arriving in a body that had chosen otherwise.
His doctor would find nothing. His hands would disagree. They would ache for strings they had never touched. He would take piano lessons. He would play badly. He would play every day.
A girl entered on Thursday. She was fourteen, with dark hair and the posture of someone who had recently grown three centimeters and hadn't recalibrated. She walked through the first two rooms without stopping. In the third room, she found her photograph — and it was not a photograph. It was a mirror. And the girl in the mirror was not the other version. She was this one. The exhibit had nothing to show her. She had not yet made the choice. Both lives were still hers. Her hands were in her pockets. She had not put them there.
She left. She did not look shaken. She looked like someone who had been told a secret she already knew.
That evening, a woman who had married at nineteen sat on her kitchen floor — cold tiles, bare feet — and called her husband and said, for the first time: "I chose this."
He did not know what she meant. She did not explain.