L.A.
Times: Scientists Weigh In On
Hawking's
Alien Warning. Some Agree On Need To
Be
Careful Seeking Out Intelligent
Unknowns
Famed physicist Stephen Hawking set
off
chatter in the scientific community
in late
April when he posited the existence
of
intelligent aliens on his new TV
series,
"Into the Universe with Stephen
Hawking" —adding that it would be
best for human beings to avoid
contact with
them. Hawking speculated that such
aliens
would likely be nomads, living in
ships
after sucking their own planet dry
of
resources, and hopping from one
interstellar
refueling station to the next.
Earth, he
said, shouldn't do anything to
encourage
their visit. "If aliens ever visit
us,
I think the outcome would be much as
when
Christopher Columbus first landed in
America, which didn't turn out very
well for
the Native Americans," he said.
Hawking
has made such statements for years —
in a
1996 essay, for example, he said
humans
should be "wary of answering
[aliens]" until our species has
become
more sophisticated. Though most of
the show
focused on what alien life — even
very
primitive alien life — might look
like, it
was the comment on alien invasion
that
captured public attention. The
Journal of
Cosmology compiled responses from a
dozen
scientists and has published them
online.
Some criticized Hawking's use of
human
behavior to predict what aliens
would do,
but others said that human behavior
was a
reasonable yardstick. Few, however,
questioned the premise of Hawking's
statements — that alien life forms
probably exist and we are likely
someday to
encounter them.--
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