Would extraterrestrial life benefit us? I don't know if that's a meaningful question. First we would need to universally agree on a standard definition of what life is. Since we don't have any idea whether our biosphere represents an average or extraordinary development of life, one common conjectur...

The Ships of Earth was my first OSC book. My parents bought it for me at a thrift shop. And it was also the first book I read cover-to-cover.

Graff presumably passes away in Ireland some time before the end of EIE, before Ender leaves Shakespeare.