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  1. BillTre

    After a Big Fire

    This article (open access I believe) from the local newspaper (The Register-Guard) has several aerial pictures of the landscape, in areas burned by the Holiday Farm Fire (~30 miles from Eugene, where I live). It shows a patchy distribution of burned areas. This is probably good, in that...
  2. BillTre

    Asking questions about protein structure determination

    Along the lines of the physic based approach, there are additional factors, beyond just the amino acid sequence, that can affect the 3D configuration. Proteins are made from one end to the other. As the forming amino acid string is extruded from the ribosome, the initial groups of amino acids...
  3. BillTre

    Do plants get any negative sensations when we cut them?

    @KWolf12, that's a very nice description of an entity, like a tree, interacting with its surroundings, and its informational awareness. There's a lot of cool tree-fungus stuff too I guess. Its been done: I think they added a lot of humanistic features to get audience appeal.
  4. BillTre

    Gorgeous Corona Virus Images

    Here is a Carl Zimmer article in the NY Times showing some fantastic images of the corona virus. These are mostly computer generated images (pretty common these days) based on cryo-EM (Electron Microscopy) and biochemical/molecular biology type data. They are very well rendered, down to the...
  5. BillTre

    Collection of Lame Jokes

  6. BillTre

    Does Testing Theories Against Data (Evolution and Blood Circulation) Require Math?

    You really want to discount any conclusion that doesn't not involve math. If it doesn't involve math, it doesn't count. Logic as a joke. And, your'e still missing out on the cladistic argument.
  7. BillTre

    Does Testing Theories Against Data (Evolution and Blood Circulation) Require Math?

    Today cladistic analyses are highly mathematical. At earlier times not so. The most primitive formal cladistic analyses were done by see where traits fell on proposed trees, and only with stable (non-homeoplastic traits-those that don't change much and better reflec tree structure. Prior to...
  8. BillTre

    Does Testing Theories Against Data (Evolution and Blood Circulation) Require Math?

    This is wrong. It is about a the existence of a hypothesized ancestor. I don't know why you have such difficulty believing this is what I am talking about. The existence of a hypothetical ancestor does not depend upon the mechanisms that underlies evolutionary changes. You keep arguing that I...
  9. BillTre

    Does Testing Theories Against Data (Evolution and Blood Circulation) Require Math?

    Your response seems to lack any understanding of what it is to consider trait distributions on a phylogenetic tree. Try reading this: Phylogenetic Systematics. which would be this I guess: Your interpretation is wrong. You seem to be thinking of studies on changes in populations frequencies...
  10. BillTre

    Does the world really need 'more power'?

    There is certainly violence in nature, but not entirely. There are plenty examples of cooperative interactions between organisms (or formerly separate organisms): fungi-tree interactions coral-photosynthetic algae mitocondria-archeal host cell chloroplast-plant cell pregenitor a person- their...
  11. BillTre

    Does Testing Theories Against Data (Evolution and Blood Circulation) Require Math?

    With math not required, as I have already pointed out: Only if you want to not read, understand, or consider what I am writing, maybe so. The only way you can make that argument with the cladistics example, is if you require to frequencies to replace any determination of whether something is...
  12. BillTre

    Insights I Know the Math Says so, but Is It Really True?

    What I wrote about analyzing phylogenetic trees using methods like cladistics in fact can do this. This is not a straw man claim. It can certainly be done math free (in simple cases). You seem to be ignoring it, but it directly refutes this claim.
  13. BillTre

    Does Testing Theories Against Data (Evolution and Blood Circulation) Require Math?

    At the time, those other evolutionary mechanisms were not available. The alternatives were no change or change from Lamarkian mechanisms (for which problematic issues were arising). If the mechanism identified can subsequently be used to further breeding efforts, then it works as a confirmation...
  14. BillTre

    Insights I Know the Math Says so, but Is It Really True?

    [Moderator's Note: Most of the content in this post has been moved to a new thread: https://www.physicsforums.com/threads/testing-theories-against-data-evolution-and-blood-circulation.994788/post-6404335 Moved content has been deleted below.] If LIGO did not find gravitational waves, would...
  15. BillTre

    Does Testing Theories Against Data (Evolution and Blood Circulation) Require Math?

    Rather than argue about the poorly defined need for math to make something scientific, I will give counter-examples that show the these rules don't apply. Darwin had two different major points in his book. For those who doubt science can be done without science, The Origin of Species is a...
  16. BillTre

    Nouns that exist only in the plural

    I think that's like sand, which is written as a singular (no "s"), it implies a bunch of things. The singular would be a grain of sand. The grain indicating the next layer down in organization, from the group thing (made of many) to the singular of those items The grain of sand or the bubble...
  17. BillTre

    Why STEM songs are so rare?

    I guess the several indian (native american) words are part of the lore.
  18. BillTre

    YouTube Classics, Part Deux

    What? They didn't back it up? :oldsurprised: :rolleyes:o_O
  19. BillTre

    What is left to discover or invent for the hobbyist scientist/engineer

    Like this. This is the simple version: The air is removed from the sealed fish tank to the sealed box on the right. An air pump in the sealed box pumps the air out. I have now found a fish tank air pump that can either pump air into or out of airline tubing, so the box can be eliminated...
  20. BillTre

    What is left to discover or invent for the hobbyist scientist/engineer

    In general, as society evolves and becomes more complex, there will be created more new little niches in which a new function (invention) could be useful (and therefore successful). The complexity currently being added will provide opportunities for new useful complexity. Some of the...
  21. BillTre

    Is Random Mutation Totally "Random" In Biology/Evolution?

    The phrase "Random Mutation" does not entirely project a clear concept. There are many kinds of mutations caused by a variety of molecular/cellular mechanisms. Location of mutations: The positions of mutations within a genome can appear random at some level of resolution. I've been involved...
  22. BillTre

    25 Years of the End of Science (or at least the end of physics?)

    While Crisper is certainly worthy of a Nobel prize, it does not represent a fundamental breakthrough in biological understanding. It is an extremely useful technique (similar to PCR, which also get a Nobel prize) which has many useful applications which can illuminate other issues. If Crisper...
  23. BillTre

    25 Years of the End of Science (or at least the end of physics?)

    Direct observations of events formerly unseeable and therefore untestable. Its a science thing.
  24. BillTre

    25 Years of the End of Science (or at least the end of physics?)

    What about LIGO and gravitational waves? That seems pretty major to me. A whole new vista on the physics of the natural world was opened, and will continue to be explored for quite a while. There are also new molecular forms, like graphine which provide a challenge in the physical explanations...
  25. BillTre

    Today I learned

    Here's another weird one: Anableps They are asymmetrical in their sexual organs: they are live bearers (don't lay eggs, give birth to little fish) and therefore require internal fertilization. The male has a specialized fin which acts like a penis to transfer sperm, as required for internal...
  26. BillTre

    2020 Nobel prize in chemistry

    biochemist Jennifer A. Doudna(below left) and microbiologist Emmanuelle Charpentier (below right):
  27. BillTre

    For animal lovers

    Cihclids are a large and diverse group. They have complex behaviors, evolve fast, and have parental care. I have several friends who have kept small cichlids that spend a lot of their time hiding/breeding in shells, like a fiddler crab (shell dwellers). Some cichlids eat the scales off of...
  28. BillTre

    Collection of Lame Jokes

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