Posited by A. H. Knoll and Richard K. Bambach in their 2000 collaboration, "Directionality in the History of Life," Knoll and Bamback argue that, in consideration of the problem of progress in evolutionary history, a middle road that encompasses both contingent and convergent features of biological evolution may be attainable through the idea of the megatrajectory:
We believe that six broad megatrajectories capture the essence of vectoral change in the history of life. The megatrajectories for a logical sequence dictated by the necessity for complexity level N to exist before N+1 can evolve...In the view offered here, each megatrajectory adds new and qualitatively distinct dimensions to the way life utilizes ecospace.[1]
According to Knoll and Bambach, the six megatrajectories outlined by biological evolution thus far are:
Milan M. Ćirković and Robert Bradbury,[2][3] have taken the megatrajectory concept one step further by theorizing that a seventh megatrajectory exists: postbiologicalevolution triggered by the emergence of artificial intelligence at least equivalent to the biologically-evolved one, as well as the invention of several key technologies of the similar level of complexity and environmental impact, such as molecular nanoassembling or stellar uplifting.
^A.H. Knoll; R.K. Bambach (2000). "Directionality in the history of life: diffusion from the left wall or repeated scaling of the right". Paleobiology. 26 (4): 1–14. doi:10.1666/0094-8373(2000)26[1:DITHOL]2.0.CO;2. ISSN 0094-8373. S2CID 86677191.
^ Milan M. Ćirković; R. J. Bradbury (2006). "Galactic Gradients, Postbiological Evolution and the Apparent failure of SETI". New Astronomy. 11 (8): 628–639. arXiv:astro-ph/0506110. Bibcode:2006NewA...11..628C. doi:10.1016/j.newast.2006.04.003. S2CID 1540494.
^ Milan M. Ćirković; I. Dragicevic & T. Beric-Bjedov (2005). "Adaptationism Fails To Resolve Fermi's Paradox" (PDF). Serbian Astronomical Journal. 170 (170): 89–100. Bibcode:2005SerAJ.170...89C. doi:10.2298/SAJ0570089C.
Further readingedit
F. Westall (2003). "Stephen Jay Gould, les procaryotes et leur evolution dans le contexte geologique". Comptes Rendus Palevol. 2 (6): 485–501. doi:10.1016/j.crpv.2003.09.009.
K. J. McNamara (2002). "Paleobiology — Bridging the Gap". Biology and Philosophy. 17 (5). Springer Netherlands: 729–738. doi:10.1023/A:1022581304306. S2CID 82294214.
W. Etter (2007). "16: Patterns of Diversification and Extinction" (PDF). Handbook of Paleoanthropology. Springer Berlin Heidelberg. pp. 441–501. doi:10.1007/978-3-540-33761-4_16. ISBN978-3-540-32474-4.
May 02, 2024
megatrajectory, evolutionary, biology, megatrajectories, major, evolutionary, milestones, directions, evolution, life, posited, knoll, richard, bambach, their, 2000, collaboration, directionality, history, life, knoll, bamback, argue, that, consideration, prob. In evolutionary biology megatrajectories are the major evolutionary milestones and directions in the evolution of life Posited by A H Knoll and Richard K Bambach in their 2000 collaboration Directionality in the History of Life Knoll and Bamback argue that in consideration of the problem of progress in evolutionary history a middle road that encompasses both contingent and convergent features of biological evolution may be attainable through the idea of the megatrajectory We believe that six broad megatrajectories capture the essence of vectoral change in the history of life The megatrajectories for a logical sequence dictated by the necessity for complexity level N to exist before N 1 can evolve In the view offered here each megatrajectory adds new and qualitatively distinct dimensions to the way life utilizes ecospace 1 According to Knoll and Bambach the six megatrajectories outlined by biological evolution thus far are the origin of life to the Last Common Ancestor prokaryote diversification unicellular eukaryote diversification multicellular organisms land organisms appearance of intelligence and technology Milan M Cirkovic and Robert Bradbury 2 3 have taken the megatrajectory concept one step further by theorizing that a seventh megatrajectory exists postbiological evolution triggered by the emergence of artificial intelligence at least equivalent to the biologically evolved one as well as the invention of several key technologies of the similar level of complexity and environmental impact such as molecular nanoassembling or stellar uplifting See also editIntelligence principleReferences edit A H Knoll R K Bambach 2000 Directionality in the history of life diffusion from the left wall or repeated scaling of the right Paleobiology 26 4 1 14 doi 10 1666 0094 8373 2000 26 1 DITHOL 2 0 CO 2 ISSN 0094 8373 S2CID 86677191 Milan M Cirkovic R J Bradbury 2006 Galactic Gradients Postbiological Evolution and the Apparent failure of SETI New Astronomy 11 8 628 639 arXiv astro ph 0506110 Bibcode 2006NewA 11 628C doi 10 1016 j newast 2006 04 003 S2CID 1540494 Milan M Cirkovic I Dragicevic amp T Beric Bjedov 2005 Adaptationism Fails To Resolve Fermi s Paradox PDF Serbian Astronomical Journal 170 170 89 100 Bibcode 2005SerAJ 170 89C doi 10 2298 SAJ0570089C Further reading editF Westall 2003 Stephen Jay Gould les procaryotes et leur evolution dans le contexte geologique Comptes Rendus Palevol 2 6 485 501 doi 10 1016 j crpv 2003 09 009 K J McNamara 2002 Paleobiology Bridging the Gap Biology and Philosophy 17 5 Springer Netherlands 729 738 doi 10 1023 A 1022581304306 S2CID 82294214 W Etter 2007 16 Patterns of Diversification and Extinction PDF Handbook of Paleoanthropology Springer Berlin Heidelberg pp 441 501 doi 10 1007 978 3 540 33761 4 16 ISBN 978 3 540 32474 4 Retrieved from https en wikipedia org w index php title Megatrajectory amp oldid 1090601894, wikipedia, wiki, book, books, library,
