xkcd creator Randall Munroe created an amusing comic, titled “Bird/Plane/Superman,” that features a checklist to help pedestrians figure out if it is a bird, a plane, or actually Superman up in the sky.
xkcd creator Randall Munroe created an amusing comic, titled “Bird/Plane/Superman,” that features a checklist to help pedestrians figure out if it is a bird, a plane, or actually Superman up in the sky.