That summary about Aliens

The premise of “Greetings E.T (Please Don’t Murder Us.)” by Steven Johnson is no one knows what awaits humanity in the unknown reaches of space. For decades humanity has sent out and listened for signals in space. Something to say you’re not alone in this universe. On November 16th, 1974, humanity decided to send the first message, in hope of a response. However in recent years there has been some controversy about reaching out. SETI (search for extraterrestrial intelligence) is all for sitting and waiting for extraterrestrials to send the first message. Then theres METI (messaging extraterrestrial intelligence) ready to send messages and is headed by ex-SETI scientist Douglas Vakoch. Who thinks E.T could be harmless. Then there are METI critics, who think that E.T is out for blood, fears rooted in the possibility of war mongering aliens. Of course only time will tell who is right. If any of them are.