Final answer:
The father's responsibilities when twins are born have historically depended on cultural and societal norms. In ancient Rome, fathers were incentived to have multiple children for status and privileges. In modern times, the father's role often includes active participation in their children's lives and crucial decision-making, especially in situations with medical issues, as seen in the case of David Reimer.
Step-by-step explanation:
The question "What was Father's responsibility when twins were born?" appears to delve into historical familial roles and cultural practices associated with the birth of twins. From historical accounts, we can see that the father's role and responsibilities could vary greatly depending on the cultural and temporal context. In ancient Rome, fathers were highly incentivized to have children as they were essential for maintaining family lineage and status. For example, a father with three children who survived to adulthood and had their own children would receive additional privileges, such as exemptions from certain public services. This could imply that the birth of twins would be particularly significant, possibly doubling the chances of fulfilling such familial obligations.
In more modern contexts, such as the case in 1965 with David Reimer, fathers might shoulder the responsibility of making critical health decisions for their newborn twins, especially if there were complications or medical concerns, highlighting the evolving nature of parental responsibility. Furthermore, the roles and expectations of fathers have undergone significant changes with more contemporary examples depicting fathers as more involved in their children's lives, especially in activities deemed gender-appropriate, as the case might be with fathers encouraging their sons' participation in sports.
Overall, the father's responsibilities when twins are born have been shaped by societal norms, cultural traditions, and personal circumstances which could differ greatly across time and place.