Oh my!! You missed the point of the Miller-Urey experiment completely. What they showed is that natural processes that existed at that time could have made amino acids. It was not a case of "man making amino acids". You pretty much disqualify yourself from debating this topic when you demonstrate that you such a low level of understanding.
Wrong! Have you ever done the Urey-Miller experiment? I have, so I know about it first hand. If you have only read about it in a book you probably don't understand the subtleties of the experiment. All the experiment shows really is that under the controlled conditions imposed by intelligent agents, it is possible to create amino acids with raw chemicals. This is a far cry from demonstrating that "...natural processes that existed at the time could have made amino acids". It is in no way a valid and adequate simulation, as interesting as the experiment was. The constraining variables heat, spark chamber, chemicals and chemical concentrations, volumes of the beakers etc. are all intelligently imposed. In order to properly simulate a real early earth environment you would have to know what such an environment was, which is currently impossible (unless we can learn how to go back in time or get to planets that are currently evolving in this way and you know they are like an early earth). However, let's say we can figure out what a reasonable environment might have been like. Now you have to work out the likely constraining conditions such as real discharge, real concentrations of chemicals, what actually were the chemicals, real constraining volumes and other conditions - this is a non-trivial set of activities. A properly designed experiment that could rationally count as anything reasonably resembling an early earth simulation would require much more than the simple little experiment done by Urey and Miller. There is also the problem of reverse reactions, primitive forces that could disrupt the created amino acids and their chains etc. In the original experiment, the amino acids were removed as created. In real life this wouldn't happen because everything is exposed to the hostile environment. Also, studies since the experiment have shown that the simple simulation they performed does not simulate an early earth at several points anyway. If their simulation is faulty or incomplete (as it seems), it doesn't really simulate what it is trying to simulate so it doesn't show that natural processes existed at the time made amino acids.
Also, your comment about man not making amino acids is self contradictory logically. You say - It was not a case of "man making amino acids". Lets look at what you said and the evidence for a minute:
Urey and Miller are both men
An experiment was done by them that made amino acids
Therefore men made amino acids (or by your logic "Therefore men
did not make amino acids")
What part of the above logical structure don't you understand? Before you start name calling, perhaps you should get your basic first year university logic correct. You have not in the least demonstrated that I have a low level of understanding of this experiment and am therefore disqualified (and by the way, my primarily discussion wasn't focused on the details of the Urey - Miller experiment or its implications or its main purpose anyway, as was obvious. You created a straw man to knock down). On the other hand, I have clearly demonstrated that your statement above is illogical (so are you qualified to say anything on this subject???)
What their experiment showed was that science had some hope that natural processes might be possible to create amino acids on an early earth (but most scientists already believed this was the case anyway). The experiment was a very small step that showed that humans were able to figure out how to create amino acids by ordering equipment and materials in a somewhat random way (and perhaps somewhat simulating an early earth) that was possible a first approximation to natural processes on a primitive earth. It is a necessary condition to show that amino acids could be created by natural processes (as Urey - Miller tried to do) but not sufficient (for the reasons I've said above and elsewhere). Jumping to the conclusion that this one experiment shows that natural processes can/may cause amino acids is just confirmation bias of already expected outcomes. I grant it is a step in the right direction (as it is an attempt to do a realistic simulation showing that natural processes could create amino acids), but in no convincing way does it show natural processes are likely or even possible to create amino acids. These are very fine distinctions but important for not jumping to conclusions and no science body has ever accepted such important conclusions solely on the basis of one experiment. From my reading the history of this experiment and given the times 1950's, it is understandable and excusable that they jumped to unwarranted conclusions about how relevant and valid their experiment was regarding only natural processes and materials causing amino acids (this was exciting stuff in the 1950's in American science). Good science is conservative and very careful, it doesn't jump to conclusions on the results of one experiment.
BTW, I believe that natural processes did create amino acids (based on evidence since) but the Urey-Miller experiment does not adequately demonstrate this - just points in the right direction. Experiments and knowledge since have developed much better simulations and models. They have moved us towards showing that amino acids could be created by natural processes. However, other research has shown reducing agents that destroy amino acids. Meteors have been shown to contain amino acids. Although, the research to date can't establish beyond a reasonable doubt that natural processes caused amino acids and other organic materials on a primitive earth to be produced and survive over time, it does point strongly in that direction.
As I've said elsewhere, the only way really, to establish natural processes being able to create amino acids for sure would be to go to early evolving planets like a primitive earth and observe amino acids in formation. Hopefully this will be possible some day for amino acids as well as other organic chemical production naturally. Any skeptical person worth his/her/its salt doesn't just jump on the bandwagon if one experiment to confirm their ideas and worldview. This is just confirmation bias.
