[edsheppa]

...that the amino acids created are UNUSABLE to create proteins due to their chirality...

I don't think that's true. What's true is that equal amounts of both left- and right-handed amino acids are produced in these experiments. But presumably one could have either left- or right-handed proteins. Why one predominates in living things isn't yet explained.

[aardvark1]

The chirality of the amino acids produced are all either left or right. But the amino acids which make up protiens in living systems are a combination of left and right.