Perhaps Man’s greatest fear is his ultimate irrelevance, that we really don’t make a difference and that in the greater scheme of things, our lives are for naught. This is why people yearn to leave a legacy, and it is often for this reason that people have children. The historical tendency to value male babies over females is due to the fact that it was (is?) the male who would carry on the family name and legacy. Upon marriage, females were typically absorbed into the family of the husband.
The Daf Yomi thought is dedicated by the family of Dr. Solomon Burack, ob"m in observance of his Yahrzeit. May his memory be for a blessing.
It is well accepted that enacting laws retroactively is most unfair, potentially throwing into chaos that which was done under past laws. However, an action we take today often sheds light on something we did yesterday.