In due time, Ballston Common will undergo a transformation from an indoor mall with a paltry offering of bizarre stores to an outdoor promenade with high end restaurants and boutiques. As two Arlington natives who spent their formative years in the mall, we mourn the loss of such a strange and special place. Tomorrow, as a fond farewell, we will spend the entirety of the day in the mall, 10 am to 9 pm, blogging all the way. We will remember stores that once were, grapple with the ones that are inexplicably still standing, and generally loiter as we used to as teenagers. Will we get to the heart of Ballston’s mystery and appeal? Possibly. Will we learn hard lessons about ourselves along the way? Definitely. Will I find a new pair of jeans that I’m in desperate need of? Not a chance in hell.