I was quite enjoying this "science fiction classic" about Earth's first contact with vastly advanced aliens, right up until the point where telepathy and other paranormal powers became a thing, and then it lost me. That's not science fiction, and it's also just a big huge deus ex machina plot device. Meh. I could deal with there not being a single female character of the slightest interest, given this was written in the late 50s, but don't call it science fiction if your plot is going to revolve around phenomena that the book itself describes as unexplainable by science. Blah.