By theoretically useful, I meant proteins that would have been useful had they evolved, whether or not it is feasible for them to evolve.
Although we certainly do not have good evidence for any other biospheres, is there any reason (for example) why a system with completely reversed chirality to ours would not work? If many starting points can lead to working biospheres, then they would be easier to produce.
Dr. David Campbell
46860 Hilton Dr #1113
Lexington Park MD 20653 USA
"That is Uncle Joe, taken in the masonic regalia of a Grand Exalted Periwinkle of the Mystic Order of Whelks"-P.G. Wodehouse, Romance at Droigate Spa
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