We already know how memories are in the brain — BlueBanana
How about plants? — BlueBanana
Most of their time was devoted to developing marketing pitches for fundraising purposes. — Rich
I wouldn't go anywhere close to vegetarian sentience, but some plants, at least, can signal that they are under attack and near-by plants (same species) can receive those chemical signals and initiate defense (increase of alkaloids in their leaves, maybe). — Bitter Crank
"The ability to recognize kin is an important element in social behavior and can lead to the evolution of altruism. Recently, it has been shown that plants are capable of kin recognition through root interactions. "
Such a complex intertangling of nature could not have happened through random accidental misfirings of DNA copying. — MikeL
Why not? — Srap Tasmaner
I just watched an interesting interview with Feinmann on the question 'why'. He said he could not answer sufficiently when asked why a magnet is attracted to a fridge. Anyway.
Take the ant on the acacia that feeds on the sugar that the acacia provides for it.
A random mutation in a segment of the DNA responsible for producing or transporting sugar occurs, causing sugar to pop out through the phloem onto the surface of the tree - ie the tree is bleeding sugar. It is very lucky at this point the plant, with such a hideous disease does not starve to death or get eaten by some huge carnivore.
A passing ant sees the sugar, says yum, and starts to eat it. It comes back every day to the still uneaten tree, eventually deciding to set up shop in the bark of the tree. Along comes a pollinator to the tree and the ants naturally scare it away, just like they scare away the other herbivores that have come to eat the tree... oh wait there a sec. No I forgot something.
A second random mutation occurs causing the plant to produce a noxious smell to insects- no, wait, bees are insects. Let me try again. A second random mutation occurs to the plant, causing it to produce a noxious smell to ants, but only noxious to ants, not to pollinating bees. This has the coincidentally lucky effect of ensuring the ants don't chase away the bees when they come to pollinate.
Oh, hang on. Let me just tweak that mutation a little bit, as I just realised that if the plant is producing a chemical noxious to ants they would not stay in plant. Let me try again. A random mutation occurs causing an aromatic to be produced (not deleted). The aromatic is only expressed in the flowering part of the plant and not elsewhere, at times when pollination is required.
The aromatic was a very lucky unwanted copying error of the DNA, especially when we consider that without it, the plant should have died in the first generation of ant settlers. - the mutations must have occurred within the one plant within the one generation.
So the plant now has successfully produced - sorry wrong wording - the plant has now accidentally produced two freak mutations (which should be catastrophic to the plant), one to do with expressing sugar on its surface in nice bitesize portions, the other with producing an aromatic - so a minimum of two highly dangerous mutations, both of which fit perfectly in with the environment. — MikeL
This is what I see as the principal deficiency in describing evolution in terms of survival. There is no being, or thing which survives, they all die. — Metaphysician Undercover
This is what I see as the principal deficiency in describing evolution in terms of survival. There is no being, or thing which survives, they all die. There is no survival. Evolutionary theory attempts to get around this problem by assuming the real existence of an abstract thing, a variety, or species, which survives. — Metaphysician Undercover
Well, insofar as the phrase "survival of the fittest" has any use, it's just this: you don't get to reproduce if you don't survive. — Srap Tasmaner
Or are you defining survival as successful reproduction? Having children is not my idea of surviving. — Metaphysician Undercover
So how does creative evolution handle a case like this? — Srap Tasmaner
One thing that springs to mind though is to invoke a valley between two hills. On one hill is the possum and on the other the kangaroo it will change into. The problem is that in order to reach the kangaroo morphology it must pass through the valley - which is a valley of all the less desirable traits that must occur for a possum to become a kangaroo. — MikeL
It's what the word means in the context of the survival of the fittest though. — BlueBanana
A teaser, from the above article, on how to skip the valley (add dimensions!): — StreetlightX
Well that's the point, it's a misleading use of the word. We commonly think that "survive" means to stay alive. But in "survival of the fittest" it means something different, it refers to successful procreation. So the discontinuity of life, the fact that there is a separation between parent and offspring, is glossed over, and hidden by that misleading use of "survival". — Metaphysician Undercover
Get involved in philosophical discussions about knowledge, truth, language, consciousness, science, politics, religion, logic and mathematics, art, history, and lots more. No ads, no clutter, and very little agreement — just fascinating conversations.