> Because aliens would not go to the unbelievable effort of traveling between the stars and then carefully hide from detection on a planet brimming with human a

> Because aliens would not go to the unbelievable effort of traveling between the stars and then carefully hide from detection on a planet brimming with human activity, somehow knowing how to make themselves invisible, and yet still being here for some reason. Why not? Walk me through your logic. > The concept of "anonymous" alien visitation is self evidently silly. I don't see the self-evident silliness. Can you explain? > But also, the concept of traveling between the stars is also so unlikely as to be effectively impossible. If you don't agree, then you don't really grasp the distance to the stars. Or if I don't agree I just don't assume that the only way to travel interstellar distances are rockets. We are slowly discovering alternative approaches that don't require incredible amounts of energy. How do you already know 100% they won't work out? Could you share your time machine with me?