The SETI League, Inc., a membership-supported, non-profit {501(c)(3)}, educational and scientific organization Searching for Extra-Terrestrial Intelligence


Departments  
 
Membership Services
   General Info
   Financial Info
   Activities
   Awards
   Coordinators
   Director's Info
   Members' Info
   Policies
   Forms
 
Publications
   Official Publications
   Director's Publications
   Ask Dr. SETI ®
   Fiction
   Non-Fiction
   Reviews
   Reading Lists
 
Technical Support
   Systems
   Antennas
   Amplifiers
   Receivers
   Accessories
   Hardware
   Software
 
Press Relations
   Fact Sheets
   Local Contacts
   Editorials
   Press Releases
   Photo Gallery
   Newsletters
   Internet Svcs
 

Guest Editorial

Their Fears are Unfounded
by Stephane Dumas


Is the risk of interstellar transmissions from Earth justifiable? Several distinguished physicists think not. Stephen Hawking has warned that we could face a Columbus-coming-to-America scenario, with Earth playing the role of the Native Americans. Michio Kaku has pointed out that Cortes conquered the entire Aztec empire in less than two years, with technology that was only perhaps 1,000 years more advanced. If aliens showed up here, the technological disparity might well be tens of times greater in magnitude.

I for one believe this argument is flawed, for the following reasons:

  1. The Incas and Aztecs did little to oppose the Spanish invasion because they believed that the Conquistadors were godlike people. Had they resisted, the Spanish would likely not have succeed. The Spanish had guns, but the Inca and Aztec peoples had the huge number of soldiers.
  2. In some cases, the Spanish used local mercenaries to wage war.
  3. A lot of Spanish died because of sickness.
  4. The Conquistadors came to America of their own accord. They were explorers. They were not invited by a smoke-signal message sent out by the Incas. So, the parallel with Messaging to ExtraTerrestrial Intelligence (METI) is not valid.

Furthermore, there are examples in history were a more advanced civilisation fell before a more primitive one (ie. the defeat of Rome by the Goths).

From a point of view of physics, it is extremely difficult to journey between stars. The energy requirement is enormous. Those familiar with the Daedalus project will recall that the starship's initial mass is 150,000 tons to send a 500 ton probe to the Barnard Star, and the trip would take 40 years. I'm not too concerned about interstellar empires. Conquering other worlds is a huge expense of resources. A civilisation trying to be stable for centuries cannot afford this kind of luxury.

I think Kaku and Hawking can rest easy. Even if we transmit, the extraterrestrials are not coming here to conquer us.

Disclaimer: The opinions expressed in editorials are those of the individual authors, and do not necessarily reflect the position of The SETI League, Inc., its Trustees, officers, Advisory Board, members, donors, or commercial sponsors.


Click to email the Webmaster
email
the
Webmaster
| Home | General | Memb Svcs | Publications | Press | Technical | Internet | Index |
entire website copyright © The SETI League, Inc.; Maintained by Microcomm
this page last updated 7 April 2012
Click for top of page
Top of Page