At the risk of ever indulging your childish, zealot, lying posts, I didn't point to Epstein's word as the truth, I never said I trusted him, and you haven't made any point from which to counterpoint to.
That said, a normal, interested person would review at the Epstein-Maxwell email and employ all the usual methods of evaluating the accuracy and meaning of any written document - context, language, intended audience, expression, time, motive/intent, cross-referencing, etc.
It's a private email from Epstein to a co-conspirator Maxwell, both of whom have expectations of privacy regarding what is being said between them. It is not a public announcement or an answer to a media interview. The motive to lie in this type of private conversation, especially between two conspirators, is low.
The email is confessional and against the declarant's (Epstein) interests. Saying "[Trump] knew about the girls" acknowledges that "the girls" alleged to have been assaulted by Epstein do indeed exist and that he indeed assaulted them. Statements made by a declarant that are against a declarant's own penal or pecuniary ($) interests are considered accurate and truthful -- so much so that they are actually exceptions to the rule against admission of hearsay in American courts.
The email uses language indicating that the recipient, who is a co-conspirator, knew the subject matter well. The recipient (G. Maxwell) tacitly acknowledges the accuracy of the statement in the email ("I've been thinking that too"), and she doesn't contradict, qualify, or protest the accuracy of the statement that "[Trump] knew about the girls." That's a high indicia of reliability.
The email does not recite behavior that would be considered much worse. It does not recite "[Trump] knew about the girls and also assaulted them" indicating accuracy and honesty about the expressed extent of Trump's involvement.
The email is drafted years after Epstein's conviction. The email is in the form of a lament and does not express any intention to perform future affirmative acts by Epstein.
So, that's what a normal person would make of the Epstein-Maxwell email where Epstein said "[Trump] knew about the girls."