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Originally Posted by gritmonkey
it's really not my job to ensure i cover off every assumption you could make with what I wrote. I wrote pond-scum, you translated that to primordial soup. How am I supposed to know you would make that leap.
I would think about common usage and context. That's how most language works.
Besides, even if we take an article like this:
http://phys.org/news174843609.html
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But why did Blackburn start with Tetrahymena, a single-celled protozoan she often refers to as “pond scum”?
And make the connection that "pond scum" was meant to refer to single-celled protozoa, it *STILL* doesn't match the description you gave:
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I was referencing when it was widely believed multicelled organisms arose and it's commonly referred to as "pond scum" as sort of a joke.
Maybe it could have been interpreted as some sort of algae. Nope. Because those started to show up about 1 billion years ago.
Or maybe you can fact check yourself and discover that multicellular organisms arose during the Mesoproterozoic period, which is also more than 1 billion years ago.
http://en.wikipedia.org/wiki/Mesoproterozoic
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The era saw the development of sexual reproduction, which greatly increased the complexity of life to come. It was the start of development of communal living among organisms, the multicellular organisms.
Furthermore, upon a closer reading of the link that YOU gave:
http://faculty.fmcc.suny.edu/mcdarby...e-on-Earth.htm
I don't really see anything that supports your claim. Here's what it says:
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From about 400 million years back to 600 million years ago, all kinds of complex multicellular life would have been confined to the waters of the earth.
Let's stop and think for a moment... "Complex multicellular life." By almost any measure of reasonable interpretation, that's not "pond scum." The time period being referenced in the Cambrian explosion, which is most assuredly NOT pointing to the "pond scum" from which you claim we came.
I see no reasonable way to interpret your statement as if you are factually correct. You screwed it up, and then tried to defend an indefensible position.
I will give you one out: Find me a reasonable reference to "pond scum" that refers specifically to "multicelled organisms" in the range of about 400 million years ago, and I'll give you the +- 100 million years you gave yourself.
Edit: Oh, and "simple plants" (your words)... also not "pond scum." I also think it would be wrong to say that we evolved from "simple plants."
Last edited by Aaron W.; 08-23-2013 at 04:03 PM.