
At CERN, she helped search for a particle that explained mass. Then Elina Scherwitzl took the same appetite for evidence into a far more intimate unknown and built an algorithm that had to earn the trust of regulators, clinicians and millions of users.

A physicist left the laboratory to build a consumer company where every launch has to survive scrutiny. His edge is not speed alone, but the patience to make evidence compound.
A CERN physicist built the hormone-free contraceptive she wanted for herself. The result became a regulated subscription used by millions - and a case study in why health-tech founders must sell the caveats as carefully as the convenience.