That's the only explanation. There is some weird sort of magic going on around these parts and, to tell you the truth, I hope it sticks around.
See? One mitten down, one to go. I knit that entire thing (minus the bit of cuff I showed you the other day) yesterday. Yep, magic. And what's more, when the fates decided to give me super speed when it comes to knitting, they also gave me mystical gauge powers. And by that you must understand that I mean that although I didn't check gauge for these mittens (and why would I? I mean, a decent gauge swatch would be the size of half a mitten, so why not just... knit half a mitten? Ya know?), something magical happened. The cuff I showed you before? It fits. And no, I didn't rip it out. I didn't move up a needle size. I didn't do anything. It just... fits. I'm not going to question it.
Now if you'll excuse me, I'm going to go get started on the second mitten before these powers run out. (I have a feeling they're not permanent and that I have a limited number of hours in which to use them. Sort of like Cinderella. Except when my time runs out I'll break a needle, drop twenty-three stitches and get my mitten caught on the strongest velcro while on my way to the sink to wash out the coffee that leapt out of my mug and onto the beautiful, creamy white of the mitten just moments after I realized that ten rows back I messed up the pattern in an irrecoverable way. Yup, I better knit fast.)