and I know when what you say does not match it. You said you see no delineation between Genesis and Acts. That does not match the truth. Different authors, written many generations apart, one observably able to have access to the information being stated, the other we have no idea how they got their information. Therefore, you were wrong and what you are seeing is demonstrably not reliable.
I am entertaining the assumption that the story states literal fact, that Adam and Eve were once in a paradise garden, then were banished from it, and then other stuff happened and we arrived at Moses in the Exodus. End of that story. If that is how it happened, then it is possible this information was passed through word-of-mouth or written communications, since there is no time during this process where there is not a person alive to carry the information. But, as I have no evidence of this, I am not able to discount the possibility that it didn't happen this way. As for how most of mainstream science is wrong, you will need to explain why you think mainstream science contradicts this version of events, and in a way that does not put the fault at an assumption of a starting point of zero (you already excluded that possibility earlier).