For much of her life, Nata Drachinskaya thought she knew her father. After his suicide in 2001, a box containing photographs, slides, family albums, official documents and personal items revealed a life he had never known. For over twenty-five years, his father worked as a cryptographer, developing encryption algorithms to protect state communications. His work was so highly classified that even his family was unaware of its true nature. When Drachinskaya began exploring her photographic archive, what began as an attempt to understand one man's life gradually transformed into an exploration of family, memory, secrecy, and the invisible forces that shape ordinary lives. Structured in two interconnected volumes, Binom reflects the duality that is at the heart of the project. A volume reconstructs the life remembered by a daughter through intimate family photographs and everyday moments. The second traces the hidden life that slowly emerges from the archive: a life built on silence, on omission and on jealously guarded truths. Together, the two narratives invite us to reflect on the distance between what we know and what remains hidden, revealing how personal stories can challenge official narratives and inherited ways of seeing the world. Working with family photographs, negatives, slides, official documents and her own images, Drachinskaya transforms the archive into a place of inquiry rather than nostalgia. Everyday details – a hand-built summer house, evenings spent coding, childhood games, treasured objects and family rituals – become fragments of a larger story. Instead of reconstructing the past, Binom questions how memory is formed, how silence is passed down from generation to generation and how every family holds shared and hidden stories. The title Binom derives from the mathematical term binomial, an algebraic expression composed of two terms. Throughout the publication, this idea of ​​duality resonates on multiple levels: two lives, two narratives, two versions of reality, the visible and the invisible. Mathematics itself becomes a powerful metaphor: precise and impartial, capable of serving profoundly different human purposes.