Last week, I sent out the following tweet: “Writers with infants: how do you do it????? And by ‘it’ I mean write anything worth a damn. My brain feels scratchy and broken-like.” Unfortunately, I only got one response. He wrote, “Ha. It can be done simply b/c it has to be done. (This is the most significant thing I’ve written in two months.)” Fantastic. I don’t expect much sympathy from…