Interesting Topics on Evolution

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Messages 121 - 140 of total 335 in this topic << First  |  < Previous  |  Show All  |  Next >  |  Last >>
healyje

Trad climber
Portland, Oregon
Jan 4, 2013 - 05:42am PT
SciAm July, 2011 / Douglas Fox: The Limits of Intelligence

And a podcast by the author on the subject as well:

Podcast: How Physics Limits Intelligence

Summary: Summary

Human intelligence may be close to its evolutionary limit. Various lines of research suggest that most of the tweaks that could make us smarter would hit limits set by the laws of physics.

Brain size, for instance, helps up to a point but carries diminishing returns: brains become energy-hungry and slow. Better “wiring” across the brain also would consume energy and take up a disproportionate amount of space.

Making wires thinner would hit thermodynamic limitations similar to those that affect transistors in computer chips: communication would get noisy.

Humans, however, might still achieve higher intelligence collectively. And technology, from writing to the Internet, enables us to expand our mind outside the confines of our body.
survival

Big Wall climber
Terrapin Station
Jan 4, 2013 - 05:46am PT
"You must be like the wolf pack, not the six-pack."

"If you do not learn to master your rage....your rage will become your master. That's what you were gonna say, right?"

Falls into favorite family flix folder!




when the Lord Jesus destroys this cursed universe and establishes a new heaven and a new earth. And in the new heaven and the new earth, there will be a different matrix.
That's not really working for me, that Jesus has to come and destroy dad's perfect creation in order to make it better. You'd think these all powerful creators of universes could get it right the first time, or they weren't as perfect and all knowing as they/we like to think. And if they're so all knowing and all powerful, why can't they show up and improve it a little without destroying it? It's so all or nothing with these God types.....
healyje

Trad climber
Portland, Oregon
Jan 4, 2013 - 06:13am PT
Yeah, "cursed universe" says it all with regard to just how f*#ked up religion can get this side of human sacrifice.
survival

Big Wall climber
Terrapin Station
Jan 4, 2013 - 06:19am PT
"Love this house you built dad, it's bigger and better than anyone has ever built one. Comfy too. But there's this annoying little mosquito buzzing around, I've decided to name him Satan. You see dad, unfortunately you weren't able to do away with this Satan bug, so...surely you won't mind if I burn the house down and build an even better one, right?

This time though, no Satan bug."
Bruce Kay

Gym climber
BC
Jan 4, 2013 - 08:11am PT
fascinating article about the possible link of crime and lead in the environment. The hypothesis is that decreasing incarceration rates may be linked to a clean up of toxic lead contamination in certain environments.


http://www.motherjones.com/environment/2013/01/lead-crime-link-gasoline


Tony Bird

climber
Northridge, CA
Jan 4, 2013 - 09:09am PT
i hope you include war in your definition of human sacrifice, healyje, because that's what it is.
Sierra Ledge Rat

Mountain climber
Old and Broken Down in Appalachia
Jan 4, 2013 - 09:17am PT
1. Are humans still evolving?

Of course, all species are always in the process of evolution at all times. But you have to understand that the process of genetic replication and repair is also evolving to become more accurate and sophisticated, at least in higher species.

2. Is group selection...

Altruism may be a combination of genetic programming and social programming... Depending on your definition of altruism. You can define altruism as a conscious choice. In that case, it's purely social conditioning.

Watch this video of a leopard killing a monkey, but then caring the dead monkey's infant as if it was its own child. Is this altruism or genetics?
https://www.youtube.com/watch?v=TqklTPCRLGI

3. What is the likelihood...

Astronomers are finding hundreds of planets like earth in the universe. The likliehood of life on other planets is very high.
healyje

Trad climber
Portland, Oregon
Jan 4, 2013 - 07:24pm PT
SLR: But you have to understand that the process of genetic replication and repair is also evolving to become more accurate and sophisticated, at least in higher species.

Do you have any links to support this assertion? I'd be interested to see them if that's so. Lots of 'lower' species have sophisticated and accurate genetic repair capabilities, much less so in 'higher' species.
healyje

Trad climber
Portland, Oregon
Jan 4, 2013 - 07:26pm PT
On the brain size front:

Scientists breed big-brained guppies to demonstrate evolution's trade-offs
Bruce Kay

Gym climber
BC
Jan 4, 2013 - 07:41pm PT
i hope you include war in your definition of human sacrifice, healyje, because that's what it is.

Depends on at least a couple of obvious things tony

1) which war?

2) do you define sacrifice as accepting personal loss for a greater ideal / purpose or as HaHa! Sucker! thanks for your noble sacrifice for our cause..... dumbsh#t.
Jan

Mountain climber
Okinawa, Japan
Jan 4, 2013 - 08:46pm PT
So nerds and geeks have more children?
survival

Big Wall climber
Terrapin Station
Jan 4, 2013 - 08:49pm PT
BWA HA hahahaaa!!!
BASE104

Social climber
An Oil Field
Jan 4, 2013 - 09:21pm PT
Hey Moosedrool,

I left next door to a famous biologist. He has been working with all sorts of psychoactive drugs, mainly hallucinogens. He got a big grant and had a huge number of them assayed for which receptor they hit. He knows all of the receptor sites, such as you mentioned.

He worked with hallucinogens, because with those, they generally hit one or two receptors really hard, like a spotlight. He can correlate them with behaviour and experience. So it is more or less a way to see what each receptor does. Pretty fascinating.

If you like, PM me and I will hook you up with him. He has a lot of unpublished material that he might let you read. Some of it is amazing, because all of these pschotropic legal drugs have also been assayed.

Even though the drug companies state the mechanism of action is unknown, that is not accurate. They know which receptors get hit, but they don't know why they work. Also, some drugs work with some people and others don't. You can have ten people with the same psychiatric diagnosis and sometimes this person needs this one and that person needs another. Point being, mental illness is very complicated.

Those drugs are also not to be taken lightly. It is a bad idea to go see your family doc, say you are depressed, and have him put you on a drug. Your brain will adjust to this drug and it changes the entire chemistry sometimes. When you stop the drug, you get sick.
BASE104

Social climber
An Oil Field
Jan 4, 2013 - 09:33pm PT
BB, you posted all of this matrix stuff on another thread. I can't understand it. Why don't you get your hands dirty and talk about biology and chemistry.

The core of H.L. Menkin's social philosophy was rather simple. He believed that it is the nature of the human species to reject what is true but unpleasant, and to embrace what is obviously false but comforting.

Galileo said,

I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect, has intended for us to forego their use.

I see this in your posts, and it is really kind of sad to watch.

You post a convoluted mess describing the world in odd terms while choosing to ignore simple science that has stood up to a hundred years of scrutiny, as well as being consistent with many other theories discovered later.

Why don't you just come out and say it? It isn't like we will like you less or anything. It won't make you look any less intelligent. It just means that you are uncomfortable with things that conflict with your faith. That's fine. Dr. F is the only one that will rag on you, and this ain't his thread.
Bruce Kay

Gym climber
BC
Jan 4, 2013 - 09:37pm PT
I'm with base on this one blue blocker. I can't understand a word you're saying.

Know what I'm sayin'?


As far as I can tell you are living proof that faith and science are incompatible
MH2

climber
Jan 4, 2013 - 10:59pm PT
So nerds and geeks have more children?


Not if you are a nerd/geek guppy. For them it's the opposite.


(Nice story, healyje)
moosedrool

Trad climber
lost, far away from Poland
Jan 5, 2013 - 12:35am PT
Hey Base, thank you for the offer. I am just a biochemist with too much time in my hands, so I read all kinds of publications. I am afraid that your friend is too much ahead of me to have a meaningful conversation.

As the evolution goes, I vote for a human-computer hybrid, then a complete transfer of a human mind into a computer. The artificial intelligence is pretty close. Of course, if we survive long enough. And I don’t think that nuclear wars are the biggest threat. We have global warming, overpopulation, pandemics, depleting resources, supervolcanos, asteroids, and who knows what else to wary about. So it is very likely that most of humanity will be will be wiped out at some point. Then, it depends whether the remaining population can carry on. Maybe that is the cure for our problems?
Bruce Kay

Gym climber
BC
Jan 5, 2013 - 12:45am PT
A very interesting radio series on cbc radio right now. It is about risk, risk management..... essentially everything we do in life.

There is two parts. both are very cool and worth listening to but part two is really neat in how risk is managed politically and by personality.



http://www.cbc.ca/player/Radio/Ideas/ID/2277544951/


http://www.cbc.ca/player/Radio/Ideas/ID/2277746244/
Ken M

Mountain climber
Los Angeles, Ca
Jan 5, 2013 - 01:18am PT
BB, when you take a quote from somebody else, you should provide a citation that you are doing that, and not give the impression that those are your words.

http://www.gty.org/resources/print/sermons/90-326
healyje

Trad climber
Portland, Oregon
Jan 5, 2013 - 01:48am PT
God was obviously incredibly bored on the eighth day...

Rock climbing fish (go to 3:45)...

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