Boden, Margaret (2003) Alien life: how would we know? International Journal of Astrobiology, 2. pp. 121-129. ISSN 1473-5504Full text not available from this repository.
To recognize alien life, we would have to be clear about the defining criteria of ‘life’. Metabolism – in other words, biochemical fine-tuning – is one of these criteria. Three senses of metabolism are distinguished. The weakest allows strong artificial life (A-life): virtual creatures having physical existence in computer electronics, but not bodies, are classed as ‘alive’. The second excludes strong A-life but allows that some non-biochemical A-life robots could be classed as alive. The third, which stresses the body's self-production by energy budgeting and self-equilibrating energy exchanges of some (necessary) complexity, excludes both strong A-life and living non-biochemical robots.
|Keywords:||autopoiesis; life; A-life; artificial life; metabolism; self-organization|
|Schools and Departments:||School of Engineering and Informatics > Informatics|
|Subjects:||Q Science > QA Mathematics > QA0075 Electronic computers. Computer science|
|Depositing User:||Chris Keene|
|Date Deposited:||20 Jul 2007|
|Last Modified:||30 Nov 2012 16:51|
|Google Scholar:||2 Citations|