What if aliens don’t understand our voices? We talk in different dialects and some people can change their voice and talk in a different accent. We also lose our voices when we sing to much or talk to much or even if we get sick enough. I am in theatre and can do five or six different dialects. My friend can do ten+. How confused would the aliens be if someone was explaining a story and one of the people in the story has a different accent and so they talk with the accent and the aliens are just ??? How? Or if someone comes onto the ship and is very talkative and one day just stops talking because their throats hurts from being sick or yelling and the aliens are so concerned for their wellbeing. If they think that the human is dying.
And besides, all the big ticket items are impossible, I’m afraid. It’s not as if you could, you know, “sacrifice your life for others” or “change the consciousness of a nation”… both of which I did, by the way… such fun!