Search results

  1. R

    Codes, language, information theory

    The Information Theory and Cybernetics (Shannon, Wiener) and the perspective of some physicists (Schrödinger) was very influential on the development of Molecular Genetics. The molecular genetic approach showed its power to explain a lot of biological and medical problems, from evolution...
  2. R

    Is Scientism scientific?

    DSM: Science or Scientism? It is possible that modern Psichiatry exemplifies the Scientism in his hard form. The manual currently used to diagnose psychiatric disorders, the DSM IV, do not seems, from my viewpoint, the best method of approach to the complexity of mental diseases.
  3. R

    Is Scientism scientific?

    The epistemic interest and technical applications of Science are obvious. A lot of scientists think that Science is the only possible way to the knowledge of the "reality". So, it would be only a matter of time the conquest by Science of all the old metaphysical questions. I am not in...
  4. R

    Roman Emperors and Empire

    Yes. I agree I suggest the great Gibbon's "Decline and Fall...": http://www.ccel.org/g/gibbon/decline/home.html
  5. R

    The most beautiful experiments

    Obviously, the initial image of the genome replication would be very different. Does luck tarnish elegance in an experiment?
  6. R

    Are you in agreement with Science popularization?

    It is very difficult for a scientist to know about fields outside his specialized area of work. Nevertheless, there are a lot of books and magazines that popularize Science to make it accessible to men without a minimal scientific background. What do you think on the value of this...
  7. R

    Why do you get old and ultimately die

    Longevity in mammals Life span varies among species. One approach to the study of these differences is the use of dimensional analysis to stablish comparisons. More recently, telomerase activity was related to number of cell generations in humans and some experimental models. What would be...
  8. R

    Scientists and technicians

    Yes. That is the sense in what I refer to technician.
  9. R

    Scientists and technicians

    My question was more related with the scientific research. For example, a relevant paper published on Biology involves a lot of laboratory work. But often the technician's work is not recognized in any form. So, this situation, although in a very different social context, is reminiscent...
  10. R

    Emergence: Ontological or Epistemological?

    Emergence is currently used in both reductionist or "anti"-reductionist senses, being ambiguous the current expression " the whole is more than the sum of parts". It is clear the epistemological use of the term emergence. Entropy is an obvious example. A macroscopic description arises from a...
  11. R

    The most beautiful experiments

    In Physicsweb are reported the ten most elegant experiments in Physics (http://physicsweb.org/articles/world/15/9/2). In Biology, the Meselson-Stahl is currently seen as one of the most elegant experiments. What biological experiment do you consider as the most beautiful? Why?
  12. R

    Scientists and technicians

    How do you see the relationship between "scientists" and "technicians" ? Are differences among them due to knowledge or rather to social causes?
  13. R

    A topological question

    In my last post, I only posed two questions. I didn't any affirmation as you seems suggest with your "elegant" reply. Now, I ask you these other questions: 1. Do you really think that your answer is scientific? Are terms as "balogna" and "bunch of crap" solid arguments? 2. Do you...
  14. R

    Genetic relationships

    As in chess? That remember the classic prize to the chess inventor (although with negative exponent). In this case there would be a dilutional effect of similarities growing exponentially with the number of generations going back. I don't know which is the % of allelic variation among human...
  15. R

    A topological question

    But our universe could be also multiply-connected in absence of circles in the sky if the "cell" size were higher than our observable (horizon) universe. Is that o.k? If so, we couldn't know its topology. And... what do you think about the possibilities of repeated patterns in distribution...
  16. R

    A topological question

    The critical density determines the Universe evolution along time. So, by measuring this density, we could know about the finite or infinite age of the Universe. But we don't know from General Relativity if our Universe is spatially finite or infinite. As far as I know, such question...
  17. R

    Can scientists 'create' life yet?

    Synthetic Biology in "Nature" There is an interesting "news feature" from Nature on synthetic biology. It is: Starting from scratch by Phillip Ball. Nature 2004;431:624-6.
  18. R

    Biological Complexity

    I don't understand this assert, but I find it very interesting. :rolleyes: How is compared the complexity of human and dolphins songs? In terms of frequency spectrum?
  19. R

    Biological Complexity

    Then, we pass from complexity based in number of distinct molecules to complexity based in types of molecules. I agree. Glycoproteins are very complicated. At molecular level then, how could we measure complexity? Here, one possible approach would be the use in some form, of algorithmic...
  20. R

    Biological Complexity

    If so, the number of different molecules by cell would be a measure of complexity. Yes? I doubt. It is possible that more parts for a same function reflect only redundant effects or be a side effect of evolution (gene duplications, for example)
  21. R

    Biological Complexity

    I didn't refer to thermodynamic entropy, but to Shannon's approach to measure of information. I agree that the number of functions by cell could be a good measure, but if so, we have difficulties with the term function. In your example, an embryonic stem cell is capable of carrying a lot of...
  22. R

    Biological Complexity

    Yes. I agree. One thing is diversity and another is complexity, although both be related. I suggest to center the discussion on a level: one eukaryotic cell, an hepatocyte for example. How could we compare its complexity with that of other cell or an electronic chip? Would it make sense here...
  23. R

    Good chemistry websites

    Thank you, Gokul43201.
  24. R

    Off topic

    Is in Goseck the oldest observatory? Here is an interesting link (Sorry,it is in german): http://www.spiegel.de/spiegel/inhalt/0,1518,328900,00.html [Broken]
  25. R

    Biological diversity and Taxonomy

    With quantitative or qualitative criteria? What would be important: % of homology in genomes or rather homology in selected regions? But sometimes changes in cancerous cells are enough important to be seen at cytological level (structural and numeric chromosomal aberrations). Site of...
  26. R

    To predict is to explain?

    No. There are medical problems or physical problems which can be understanded by scientific or non-scientific (mythic, for example) forms. It cannot be said that a community or an individual was ever (or never) scientific. I believe that Kepler made astrological predictions. Nevertheless...
  27. R

    Biological diversity and Taxonomy

    What would be a good, universal, definition of species ? I don't know if there is already such definition. If DNA or RNA homologies are an essential component of definition, it would be possible that one insect species, for example, were also rather a genus. And, could we talk on species with...
  28. R

    Biological diversity and Taxonomy

    Phobos, thank you for your interesting links. But my doubts remain. First, in one of your links I read: "Only 4,000 species of bacteria are known (1998), although bacteriologists believe that around 3 million species may actually exist" . That is a great numerical difference (three magnitude...
  29. R

    Biological Complexity

    I doubt. How many bacterial species are there? How many insects?
  30. R

    Biological Complexity

    Are the complexities in artificial (actual and potential future engines) and biological systems comparable? How?
Top