It's a lovely day. It's about 75 degrees - finally shorts weather! - and I can't wait to take a long walk. I leave from my front porch, walk 3 blocks north and I turn right. I walk another 3 blocks east, and at the intersection, turn right again. I walk 3 more blocks south and turn right at my friend's house. I walk 3 more blocks west and I get tired. I stop. I eat. It's a beautiful thing. Where am I when I stop walking?