Cold_Zero wrote:So when Stebo asks for an example in our lifetime, you retort 'You want to see the process happen in live time? If so, you fail to understand evolution.'
Basically you are implying it takes to long (too many years) for us to see, but we should trust you or scientists on that.
Precisely. Evolution takes a long time. You live a short time. You get to look at where we've been (fossils) and where we are now to determine what's going on.
Don't trust me, research it for yourself! That's what science is all about! This is not about trust, this is about what can and cannot be tested.
Cold_Zero wrote:
1. How do you get around the issue that most mutations end up in the organism being sterile or in poor health? Yet it appears that natural selection implies it is a good thing.
It's not about good or bad in the moral sense of those words.
Organisms that thrive are around, those without the tools necessary to survive die off (in HUGE numbers all the time).
How about the good mutations. Like tall people that live long lives. If tall people are born and breed with more tall people, you get more tall people. If they out-breed short people, you get more tall people than short people. If that trend continues, you can say goodbye to short people for the most part.
Mutations that work will allow the organisms to survive. Those that don't (sterility, poor health) will force the organism to die off. It's just how it goes, free from moral judgements.
Cold_Zero wrote:
2. How do you get around the issue that the entire species has to evolve at the same rate, over such a vast period of time? And that the mutation or evolving between multiple organisms have to keep up at least in pairs once the organism has bridged over to a species that has to have both a male and a female?
I'm not sure I understand the question. Entire species don't evolve at the same rate, per se. That is the mechanism of natural selection at work.
Humans, for example, have evolved at different paces. This is obvious in differences of visual appearance, and even right down to the cellular level. Think skin color.
The second part I just don't understand. Perhaps you could re-phrase?
Cold_Zero wrote:
3. Here are the examples of organisms jumping from one species to another? Specifically, do/have single celled organism change to complex celled organisms?
Good question!
Imagine a pond filled with bacteria and viruses. There are competing species of bacteria who need to nutrients in the pond.
Now, if they clump together during their life cycles they have a better chance at getting the nutrients they need and fighting off competitors.
After several life-cycles, the bacteria have become dependent on each other. Over an even longer period of time, it becomes a necessity for survival.
That need = multicell organisms. More than one bacteria gets together and needs the other bacteria to survive.
This is a hypothesis, BTW. That potentially happened billions of years ago and would be tough to observe (for obvious reasons).