Having refuted the supposition that I had once been a senior citizen, I turned my attention to the remaining possibility, namely, that I was now a senior citizen.
I ran my fingers over my face and discovered wrinkles. Exploring further, I found those wrinkles to be deep. “Aha,” I informed myself, “I’m old!” I ran my fingers over other parts of my body and found that I had no breasts. A hypothesis formed in my mind. My fingers kept exploring. Soon my hypothesis was confirmed: I was a man. I conflated my two discoveries and concluded that I was an old man. Then, after a long interval of exploration, I found that, though I was an old man, my male parts were in satisfactory if not superior working order.