BioSETI: "Wow!-Signal innerhalb des irdischen Gencodes"

Quelle:

1* http://arxiv.org/abs/1303.6739
2* http://www.sciencedirect.com/science/article/pii/S0019103513000791

Abstract

It has been repeatedly proposed to expand the scope for SETI, and one of the suggested alternatives to radio is the biological media. Genomic DNA is already used on Earth to store non-biological information. Though smaller in capacity, but stronger in noise immunity is the genetic code. The code is a flexible mapping between codons and amino acids, and this flexibility allows modifying the code artificially. But once fixed, the code might stay unchanged over cosmological timescales; in fact, it is the most durable construct known. Therefore it represents an exceptionally reliable storage for an intelligent signature, if that conforms to biological and thermodynamic requirements. As the actual scenario for the origin of terrestrial life is far from being settled, the proposal that it might have been seeded intentionally cannot be ruled out. A statistically strong intelligent-like “signal” in the genetic code is then a testable consequence of such scenario. Here we show that the terrestrial code displays a thorough precision-type orderliness matching the criteria to be considered an informational signal. Simple arrangements of the code reveal an ensemble of arithmetical and ideographical patterns of the same symbolic language. Accurate and systematic, these underlying patterns appear as a product of precision logic and nontrivial computing rather than of stochastic processes (the null hypothesis that they are due to chance coupled with presumable evolutionary pathways is rejected with P-value < 10–13). The patterns are profound to the extent that the code mapping itself is uniquely deduced from their algebraic representation. The signal displays readily recognizable hallmarks of artificiality, among which are the symbol of zero, the privileged decimal syntax and semantical symmetries. Besides, extraction of the signal involves logically straightforward but abstract operations, making the patterns essentially irreducible to any natural origin. Plausible ways of embedding the signal into the code and possible interpretation of its content are discussed. Overall, while the code is nearly optimized biologically, its limited capacity is used extremely efficiently to pass non-biological information.

Ein paar Sätze auf Deutsch wären aber auch ganz gut.

Gruß, Klaus

Kurz gesagt gehts darum, dass das Leben auf der Erde quasi "künstlich" erschaffen worden sein könnte. Die hohe Ordnung etc des grundlegenden genetischen Codes irdischen Lebens wird dabei als Argument herangezogen. Dieser Code könnte also künstliche Informationen enthalten, die über Jahrmillionen erhalten geblieben sind.

Schönes Gedankenspiel, aber sehr hypothetisch, wie die Autoren selbst auch schreiben:

As the actual scenario for the origin of terrestrial life is far from being settled, the proposal that it might have been seeded intentionally cannot be ruled out.

Man kann diese Theorie nicht ausschließen mit dem heutigen Wissen, aber man muss sie auch nicht glauben