Incredibly fascinating. Particularly (given what little I can glean from the abstract) that the system seems to already consist of extremely simplified, plausible precursors of both tRNA and mRNA. It seems to basically follow biochemically that a ribozyme, which would be a simpler ancestor of the ribosome, could evolve to assist the template-guided polymerization of peptides.
Given the recent demonstration that a fully protein-free(pure RNA) and extremely simplified ribosomal core can catalyze multiple sequential peptide bonds it seems scientists are making considerable experimental progress on the evolution of the translation system.