Miller-Urey:
Yes, it's true they didn't know what prions were back then. My paraphrase was expressed with the much more articulate modern vocabulary than the older, more period-correct language. It's about like expressing volumetric geometry of curves with the language of integral calculus: if you share the language, it is MUCH faster and more efficient to do things this way. On that note, if they ever DID make prions in a similar experiment, it would be immediately called a self-replicating molecule. Oh, sure, it needs a virtually identical protein to re-fold, but that's beside the point. We've had so-called "self-replicating molecules" come from a variation of PCR in a genetic base soup.
This also brings up an interesting point: we're talking about an experiment 50 YEARS OLD. Why is the furthest we've gotten in 50 years pre-engineered molecules in alphabet soup?
Also, I didn't take all my information from the creationist page Wolf mentioned. I knew before-hand that about 80% +- of the experiment's results were a pseudo-proteinacious low-density plastic/tar. I searched repeatedly for more info...but only found genetic bases. When I found the said creationist page that DID mention this, I copied their name for the substance assuming that if they were willing to write a 4000 word essay with visuals, they cared enough to spell things right.
Regardless, the idea that whatever you call it could do basic UV photosynthesis is ridiculous. The environment is already intensely reduced. Any life processes would have involved oxidizing things to provide energy to make a basic metabolism, not further reducing already highly-reduced chemicals...which effectively shuffles electrons up pointlessly. We're looking to process energy that's already there, not make more energy when there's still no metabolism to use it.
Radiometric Dating:
I'm glad Wolf brought up Radio-carbon dating and calibration-curves. Radio-Carbon dating is the one and ONLY dating method we can verify to be inaccurate. Moreso, we've known this for THIRTY YEARS. You hear this? I thought not.
One of the early attempts to calibrate carbon-dating was to match it to tree anual rings of known ages. The result was that even though carbon dating OFFICIALLY can date things up to 60,000 years old (in theory) the tree-rings showed that it is only truly accurate for up to 12,000. (The 12,000 years is from memory, not the cited abstract.)
SourceAttempts to produce a calibration curve for the radiocarbon timescale by analysis of known age materials have highlighted the inaccuracies of conventional radiocarbon dating methods. The resulting ambiguities have caused a loss of confidence in radiocarbon dating particularly among European pre-historians.
If memory serves, the problem is insoluble. Meaning that one of the assumptions of Radio-Carbon-dating is a constant input of C-14 into the environment and that apparently, 12,000 years ago, that rate changed, so you wind up with multiple dates from one sample when you try to calibrate it to the shift. Even if you could calibrate it, the computation to do the calibration would erase any evidence of another C-14 rate-shift and you just wind up with bad numbers with no way to possibly re-calibrate them.
Don't quote me on that. That's from memory.
Chances are, other dating methods have similar problems. In fact, I'm rather certain that C-14 dating was used to calibrate other dating methods....

iaradrunk'
Edited by Reflectionist, 16 July 2009 - 11:07 PM.