
In the mid-1980s I was a broke, over-worked graduate student at the University of Utah and it was here that I discovered Dr. Who. The local PBS station played two of the old, serialized episodes at 10 pm, and it was the one hour a day I allowed myself as a break in my studies. My first Doctors Who were Jon Pertwee and Tom Baker. I’ve enjoyed all the doctors, though.
When I saw the recent news that the next regeneration of the doctor is to be played by a woman, it was on Twitter, from the BBC. I cried. We’re not talking misty-eyed, either—I had tears rolling down both cheeks. Until I saw the announcement I didn’t realize it meant anything to me.
And then I saw a re-post of the news that the creator of Dr Who wanted a female doctor back in 1986.

In the parallel timeline where the new doctor in 1986 is a woman, I decide to stick it out at the University of Utah, despite the lack of any female professors or half-way decent mentorship. In that world, dammit, I bust my ass, got my PhD, and finish by 1992.
After that, my first teaching position is at a small liberal arts college in New England, and we move there with our two cats. My husband starts his own software company.
We don’t have our first kid until a couple of years after that, and my husband never joins Microsoft. He works for himself. In this timeline, the Xbox is never invented.
By the early 2000s, I’m teaching someplace else. I’ve dutifully been publishing articles in algebraic topology, but I take a year off to have a second kid and write a middle-grades science fiction novel. My husband takes his enthusiasm for the potential of new, more powerful mobile devices and changes the focus of his business. By the time Apple introduces the iPad, his company is on its third generation of tablets.
When Twitter launches in 2009, my publisher suggests I establish a presence there. I’ve written two picture books and four YA novels by then. I’m very busy with teaching, advising, and book tours. I tweet about my black cat Hilbert, and my two vizslas Rágógumi and Káposzta, but not every day. Only careful readers of my books know about my love/hate relationship with cooking, because the characters in them fumble the eggs, burn the toast, and serve creamed chipped beef on toast which no one eats. I do not invent the hashtag ragecook. And while Káposzta, called Kápi for short, is photogenic, I’m still packing lunch and driving to piano lessons, so I don’t have time for a daily photo of him.