is the first collection of science fiction stories by award-winning author and aerospace engineer Eric Choi spanning his 25 year writing career. The stories are “hard” science fiction in which some element of engineering or science is so central there would be no story if that element were removed. Story topics include space exploration, artificial intelligence, virtual reality, cryptography, quantum computing, online privacy, mathematics (statistics), neuroscience, psychology, space medicine, extra-terrestrial intelligence, undersea exploration, commercial aviation, and the history of science. A special feature of the book is that each story is followed by an "Afterword" that explains the underlying engineering or science. This collection will entertain and inform all aficionados of science and science fiction.