by Chris Peterson » Mon Nov 25, 2013 7:44 pm
robgendler wrote:"If microbial life is widespread in the cosmos, we can expect that, at least here and there, sentient beings will evolve. We would then be much closer to answering that age-old puzzle of existence: Are we alone in the universe? "
Good article...except for the above grossly determistic assumption. If intelligence is highly selected for (inevitable sentient beings) then answer me the following. Arguably the second most intelligent animal on earth (the chimpanzee) has not been even remotely as successful as man from an evolutionary perspective. Also there is good evidence for the existence and subsequent extinction of multiple hominid species, all highly intelligent and likely highly conscious beings. The highly intelligent marine mammals although successful in their own way are not any more successful than sharks.....a primitive group having shown little change over 400 million years. The article was great until his last sentence which reveals obvious anthropogenic thinking and bias.
Indeed, there is a tendency to think of humans as somehow being "at the top" of the evolutionary ladder. That leads to thinking that sentience is somehow an evolutionary endpoint.
Sentience is no more impressive than teeth or claws. It either allows a species to be successful, or it does not. If humans are any example, sentience is likely not a good evolutionary path for a species, as it seems our time of existence may be limited by our very sentience.
I agree completely with the comment that bacterial life implies the emergence of sentience, at least occasionally. But it tells us nothing about how many other sentient species might exist at any one time.
Another bias comes in connecting sentience with technology. For all I know, whales and dolphins are more sentient, and more intelligent by many metrics than humans. They may well be more successful species. But since we tend to evaluate intelligence by tool use, we don't even hardly know how to consider them.
[quote="robgendler"]"If microbial life is widespread in the cosmos, we can expect that, at least here and there, sentient beings will evolve. We would then be much closer to answering that age-old puzzle of existence: Are we alone in the universe? "
Good article...except for the above grossly determistic assumption. If intelligence is highly selected for (inevitable sentient beings) then answer me the following. Arguably the second most intelligent animal on earth (the chimpanzee) has not been even remotely as successful as man from an evolutionary perspective. Also there is good evidence for the existence and subsequent extinction of multiple hominid species, all highly intelligent and likely highly conscious beings. The highly intelligent marine mammals although successful in their own way are not any more successful than sharks.....a primitive group having shown little change over 400 million years. The article was great until his last sentence which reveals obvious anthropogenic thinking and bias.[/quote]
Indeed, there is a tendency to think of humans as somehow being "at the top" of the evolutionary ladder. That leads to thinking that sentience is somehow an evolutionary endpoint.
Sentience is no more impressive than teeth or claws. It either allows a species to be successful, or it does not. If humans are any example, sentience is likely not a good evolutionary path for a species, as it seems our time of existence may be limited by our very sentience.
I agree completely with the comment that bacterial life implies the emergence of sentience, at least occasionally. But it tells us nothing about how many other sentient species might exist at any one time.
Another bias comes in connecting sentience with technology. For all I know, whales and dolphins are more sentient, and more intelligent by many metrics than humans. They may well be more successful species. But since we tend to evaluate intelligence by tool use, we don't even hardly know how to consider them.