Should it worry me that I don’t know how old my sister is? In my own defense, she doesn’t know either. For that matter, she’s rather dubious of the date that’s listed on my driver’s certificate. “Did you lie?” she asked me once, suspiciously. I rely on the Guy and Tara to give me accurate assessments about my tally in years. The Guy goes one step further and provides me with what I can only guess are reasonable numbers for my sister’s age as well.