Halakhah doesn’t deal so much with rights as with obligations. Men have the “right” to be well and thoroughly taught, and to spend years learning Torah, because they are also obligated to learn; women are not. But a bold halakhic idea may change all that.
Halakhah must continually be updated and revised to take into account changing circumstances, but what is important is the process by which this takes place. Beit Shammai’s “Eighteen Rulings” provides a valuable lesson.