This is not scalable, and also when you do things by hand, even in the best laboratories, you have variations in techniques, and you need to know, if you're making a drug, that the Aspirin you're going to take out of the bottle on Monday is the same as the Aspirin that's going to come out of the bottle on Wednesday.
esto no es escalable y, además, al hacer cosas a mano, incluso en los mejores laboratorios, existen variaciones en las técnicas y si se desarrolla un fármaco, se necesita saber que la Aspirina que hay en el frasco el lunes es la misma Aspirina que hay en el frasco el miércoles.