Suponga que una familia contiene dos hijos de edades diferentes y estamos interesados en el g´enero de estos ni˜nos. denotemos con f que una hija es mujer y m que el hijo es hombre y denote con un par, por ejemplo fm, que el hijo de mayor edad es la ni˜na y el m´as joven es el ni˜no. hay cuatro puntos en el conjunto s(este es el conjunto universo) de posibles observaciones:

Robert just found out that he is going to be unemployed within a month because his factory has invested in a robotic factory line and his skills are no longer needed. this means that robert is . the gdp within country d has begun to decline. as a result of decreased production, thomas lost his job designing cars. this means that thomas is . raquel has just been offered a job, but she has decided not to take it because she feels her skills merit better pay and a better position. this means that raquel is .