> come over and eat us if we said hello It's so expensive in energy to do this that it's unlikely. Even the moon, if it was made of gold bars stacked at the r

> come over and eat us if we said hello It's so expensive in energy to do this that it's unlikely. Even the moon, if it was made of gold bars stacked at the ready to be picked up and brought back to Earth, it wouldn't be worth it. Even if you had technology to transport a significant force across the span of light years, why endanger that with the risk of resistance? Just go to one of the billions of habitable planets that don't have complex, radio transmitting intelligences on it.