IluvTTATT said-
What could have made chemicals, which tend to a lower energy state and disorder, to have self-replication and to have this "survival mechanism" that needs energy and consistently changes, just to meet the need for self-propagation and self-preservation?
Think back to the examples of fullerenes (which you cited earlier), which although giving the appearance of being more 'ordered', are actually a more stable configuration overall, and hence an example where a lower energy state results in the greater stability AND lending the appearance of more order. In other words, lower energy states and disorder are not mutually-exclusive.
Same thing happens within strands of DNA, where the structure of the double-helix is stabilized due to intramolecular ' hydrogen bonding' (i.e. dipole-dipole attraction of hydrogen atoms to an adjacent electronegative atom). Hydrogen bonds are very weak forces, but there are thousands of these H-bonds within a DNA sequence which gives the structure great stability, overall.
The benefits of sexual reproduction are greater variability and exchange of genetic information within the gene pool (you asked about factors that influence the rate of evolution earlier: sexual reproduction is MUCH faster than asexual reproduction, and it increases variability by 'shuffling the deck' more often). We see rudimentary features of sex-like reproduction in bacteria (eg exchange of plasmids, pockets of genetic material which bacteria will swap), but the emergence of sexual reproduction is clearly a winner.
BTW, it's funny to me how those who most tout the "glory of God's creation" are often those who have spent the least amount of time learning and understanding "God's" creations. As long as I've been learning about how life actually operates, I'm still blown away by just how amazing the process of life truly is, and how it all works together as a system, with an interconnectedness that truly is mind-boggling.... Fascinating stuff! That's what Einstein was referring to as "cosmic religion", the sheer wonder and excitement of being given the privilege of living, yes, but of being given the possibility of studying it.
Adamah said- See, you missed that the study's FINDINGS need to be replicable:
Perry said- So according to your own tedious definition a study is separate from its findings, and only the findings need to be replicated for it to qualify as science?
That's not just my definition, Perry: that's the commonly-accepted usage of those terms within the scientific community, which anyone who's remotely interested in engaging in a meaningful discussion of scientific discussions SHOULD already know.
A 'study' IS the process of investigating, the process which leads TO 'findings', the results of the scientific investigation. The findings MUST be reproducible by others, since scientists don't accept 'one-offs', or accept a scientist's claims on faith ("Come on, fellas: you can trust me! It worked in MY lab, I promise it did!").
Now, if the subject is 'evolution on Earth', it's impossible to re-run the ENTIRE EXPERIMENT, starting with the primordial soup from which life first emerged. Hence why we run slightly-less ambitious experiments, such as Lensky has done, which demonstrate the same principles at work but which rely on indirect experimentation; there's been MANY such studies done, from many different angles, all pointing to the FACT of evolution.
Perry, do yourself a favor and check out this book from the library (my local branch has it, as should every public library in the World): "Evolution vs Creationism", written by Eugenie C Scott (she's head of NCSE). She's an excellent communicator, and explains it quite clearly.
Here's Chapter One (the first chapter is available for free reading, in PDF format):
http://ncse.com/files/pub/creationism/Evo%20vs.%20Creationism--2nd%20edition--Chapter%201.pdf
Adam