Evolution of Complexity: Can Organisms Develop Immunity to Drugs Over Time?

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The discussion centers on whether organisms inevitably become more complex over time through evolution. Participants argue that complexity is not a guaranteed outcome of evolution; rather, it depends on environmental factors and adaptability. While some believe that given enough time, more complex organisms will arise to fill ecological niches, others emphasize that evolution can lead to simpler forms as well. The Cambrian explosion is cited as a significant period where complex multicellular life emerged, suggesting that available niches may facilitate complexity. However, the majority of life on Earth remains simple, particularly in the form of bacteria, indicating that complexity is not the sole trajectory of evolution. The conversation also touches on how environmental pressures, competition, and adaptations like immunity can influence the complexity of organisms. Ultimately, while complexity can increase, it is not an inevitable outcome for all life forms.
  • #31
Wouldn't immunity be another way to become more complex?
 
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  • #32
Gold Barz said:
Thats my point, I think given enough time you will see an increase in maximum complexity of atleast one kind of life, if not more, don't you agree?

Yep, I think we all agree that complexity can increase over time...I think we're just being careful not to imply that a certain degree of complexity (or a certain direction) is a necessary outcome or that all life will do this (since most life is still less "complex").

misskitty said:
Wouldn't immunity be another way to become more complex?

Certainly. Competition with other species, particularly species that directly attack you, is a great way to ramp up natural selection. Not that N.S. creates complexity...rather it can more quickly sort through the existing variations of a population and bring better-adapted (e.g., better immunity) traits to the forefront of the population.
 
  • #33
Phobos said:
Yep, I think we all agree that complexity can increase over time...I think we're just being careful not to imply that a certain degree of complexity (or a certain direction) is a necessary outcome or that all life will do this (since most life is still less "complex").

I sincerely think that complexity probably/likely increases over time. But the number of more complex life will narrow while it's complexity increases, don't you think?
 
  • #34
Phobos said:
Certainly. Competition with other species, particularly species that directly attack you, is a great way to ramp up natural selection. Not that N.S. creates complexity...rather it can more quickly sort through the existing variations of a population and bring better-adapted (e.g., better immunity) traits to the forefront of the population.

I know that there are certain strains of viruses or illnesses that the human race has become immune to...or most of it. That would mean that the human race continues to grow in complexity, wouldn't it?
 
  • #35
Gold Barz said:
I sincerely think that complexity probably/likely increases over time. But the number of more complex life will narrow while it's complexity increases, don't you think?

Maybe. There will porbably always be a spectrum of least to most complex. It might narrow a little bit. I can't see it narrowing by much though.
 
  • #36
This is related to the immunity I was talking about. Would it be possible for a person to develop and immunity to a drug? For example, a person undergoing chemotherapy becomes immune to the chemo so it stops working. How long would that take to happen?
 

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