Wouldn't it be nice to be able to a test a drug to see if it's effective and safe without having to put patients at risk, because that first time you're never quite sure?
¿Acaso no sería genial que  pudiéramos probar un medicamento para constatar si  es efectivo y seguro sin tener que arriesgar  a los pacientes, debido a que en esa primera vez  no se está tan seguro?