The surprise alien blockbuster Arrival takes an old science fiction plot — intelligent extraterrestrials come to Earth — and jettisons the explosive boom and doom of an invasion scenario. Instead of indulging our fears of otherness, the film posits that extraterrestrials might be peaceful, curious, and maybe even in need of human assistance. It also peers into how humans would struggle to help galactic fellow travelers because our government institutions and prejudices make it nearly impossible for our leaders, much less our species, to act in concert. That’s an interesting reality check from a science fiction film, especially as SETI research ramps up and a politician with little interest in science or diplomacy moves into the White House.

The chances that Donald Trump will speak to aliens on behalf of mankind are not significant, but there remains a nonzero chance of contact. And if that event occurred, it would — unless something radical happened — be organized in a frighteningly haphazard way.

Whether it’s Trump or someone else, whoever is tasked with talking to extraterrestrials on this planet will have to approach the situation with the understanding that whatever they do might not work. Any alien landing, especially on the lawn of the White House, could be easily perceived as hostility or opportunity. “It’s probably going to be perceived as both,” says Douglas Vakoch, a SETI researcher and head of METI International. Any country will want to do what they can to protect themselves, and many may also want to capitalize on the opportunity to access new technologies and represent planetary norms. But that doesn’t mean America has a plan.

To the contrary, there is no evidence to suggest the U.S. government has a concrete protocol for dealing with alien visitors. There are only reports about a 1950s military plan called the “Seven Steps to Contact,” which was designed as a guide for human extraterrestrial intervention and calls for an initial round of remote surveillance and intelligence gathering to assess the aliens’ weaponry and technological advancement before any pleasantries. The idea there being that if we’re technologically inferior, we’re not going to want to stir things up. The plan also suggests that humans should abduct plants, animals, an intelligent forms of life before touching down on another planet’s surface. This all makes sense, which is why it’s so alarming. If aliens followed the steps on Earth there would be widespread panic and clear communications would immediately become difficult.

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