The people over at the Orwellian "Mormonthink," in their section, "Conflicts with Science," paint the picture that because Mormonism depends on founding Biblical myths like Adam and Eve, the Flood, and Babel, the scientific impossibility of these myths disprove Mormonism. "Mormonthink" actually stifles the thought of its readers by oversimplifying the issue.
I won't offer a full-blown correction of all their errors. Nevermind that Mormonthink's (henceforth MT's) representation of the LDS Church's stance on evolution is woefully and misleadingly incomplete (cherrypicking Church statements, ignoring that evolution is the official explanation for human origins taught at LDS institutions of higher learning). MT's argument with regards to Adam and Eve and the Church is fallacious. Their first error is making a roundabout, convoluted argument that because evolution happened, Adam and Eve could not have existed, because people are related to apes, etc. If I were arguing their case, all I have to do is cite the genomic evidence showing that not all humans descended from a primal couple! They can thank me later for improving the sophistication and succinctness of their argument.
I also won't go into the myriad of ways that Adam and Eve can be interpreted allegorically within the LDS tradition (For one, MT must have missed strong cues in the temple ceremony). What I will do is introduce a better test if facts regarding Adam and Eve can sink the Mormon case. If the myth was formulated at a very late date, i.e., after Lehi allegedly left Jerusalem, then Mormonism would be false, because the Adam and Eve tradition would be anachronistic. But the Book of Mormon does not require Adam and Eve to be real. It only requires that the tradition predates the Babylonian exile.
I have considered the possibility that Israelites formulated the Fall tradition in exile as a way to allegorize their expulsion from the Promised Land. The myth also may have been due to Zoroastrian influence during the exile. Zoroastrian myths hold all humans descending from a primal couple, when all other Ancient Near Eastern creation accounts like the Enuma Elish do not.
However, there is evidence that Adam and Eve account in Gen. 2-3 was written during the Assyrian exile, which started in 722 B.C., well before Lehi left Jerusalem (See Tryggve N. D. Mettinger, The Eden Narrative [Eisenbrauns, 2007]) . So the Adam and Eve story could have been available on the Brass Plates.
Just because George Washington existed does not require that he literally chopped down the cherry tree. Myths can be joined with history, and that is one among many things MT blatantly ignores.