XKCD 2501, basically.

The only people that read xkcd are those that can understand it

If that was true, there’d be no need for ExplainXKCD.com.

And even then on some of the more physics-y ones I just give Randall the benefit of the doubt that it’s funny.

Surely if you’re sending someone on a 3000 year journey, you’ve prepared for the possibility of making a faster ship in the time between them leaving and arriving at their destination!?

Does that mean there could be species which humans want to fuck, but which would not consider humans intelligent enough to give proper consent?