Birthdays have not felt all that significant in recent years, and this one felt no different. I just turned 36, and this did not feel notable, either. But I just received an email from a dear friend, whom I’ve known since freshman year of college, and she pointed out that we met when we were 18. So I have known her for half of my life. Now I feel old. Really old. I’ll probably feel like some kind of grand gesture will be necessary soon. Maybe a drastic haircut? A cheesy tattoo?