No, that can't be it. No local drones or Dyson spheres, but we're cohabitating with a species capable of intra-solar travel? Seems highly suspect. They'd need

No, that can't be it. No local drones or Dyson spheres, but we're cohabitating with a species capable of intra-solar travel? Seems highly suspect. They'd need to be at roughly our level of technological development, which, if true, would be more likely to believe in a concept of "God" engineering that outcome than any kind of organic alien life.