Thanks to every generation of women from every culture on earth who ever lived, thanks to every woman who ever voiced a seditious thought or pursued her talents regardless of invisibility, my generation of women have been able to live a life different from that of every woman who came before us.

Far from women as a species being vain, flirty or irrational, overemotional, hysterical, lunatic or morally weak, what strikes me about women and their history is just how damn sane we have managed to stay.

Every generation builds on the work of the last, and pill or no pill, my generation could not have made the strides they have without all the work done by others. The same is true for future generations, although luckily for them the advancement of women is now snowballing. The legacy of the current crop of women over fifty—the accidental feminists—has given a leg up like no other to their daughter and granddaughters, not least through the #MeToo movement.

Women over fifty today are the first women ever to have almost universally earned their own money for most of their lives. This is by any definition revolutionary, although it rarely gets commented upon. It is almost as if what happens to women remains largely invisible.

Whenever people nominate the world’s most important inventions (the internal combustion engine, the world wide web, battery storage), I always suggest the pill and the tampon

Even if you had a feminist mother like mine, you still absorbed the messages about our limited future through the pores of your skin…We were baby-making machines, always had been, always would be, and we were supposed to be satisfied with that. The women who were beginning to assert their full and separate humanity were often caricatured as harpies, termagants and shrews.

Women who are over fifty grew up in one world and now must exist in quite another. They are a generation that has experienced the greatest change in women’s lives recorded history yet such is our lingering ability to take women’s lives seriously that society barely acknowledges that there has been a fundamental shift.

I believe that women’s liberation—or second-wave feminism, as it is now known—was born from the pill, not the other way around. Safe, effective, affordable contraception allowed half the human race to imagine and create a different future for themselves. That is certainly how it worked for me.

I wanted the kind of life my father had had, not the one I saw my mother struggling to get away from. I thought I was peculiar in this desire, but, as things have turned out, it seems such secret ambition burning in young female breasts were not so uncommon.