Counterfactual

The Parallel Lives of Tasneem and Sierra

In 76 girls, Tasneem found its level. 50 years earlier, Sierra occupied that same statistical address.

1974–2025

Tasneem

peak 2018 2025 19401960198020002020
Peak year 2018
Peak births 80
Latest count 76
Status Stable
Peak generation Gen Alpha
1940–2025

Sierra

peak 1998 2025 19401960198020002020
Peak year 1998
Peak births 5,841
Latest count 476
Status Endangered
Peak generation Gen Z
Tasneem and Sierra peaked in the same cultural weather — the Gen Alpha naming world. They are not replacements; they are siblings separated by 50 years, occupying the same statistical address at different addresses in time.