gee..I'm late... BrendanB said a lot of what I would.

"when discussing the truth or otherwise of a position, i am assuming that the specifics of the arguments need to be addressed."

Indeed.. but not having all possible specifics does not invalidate the basic argument!

"you, yourself, refuse the claims of experts...because they are creationist."

I do not do any such thing. In so far as anyone who has the **credentials** of 'expert', that is, has gone to school, received a degree, read the literature and done extended field work... and then interprets all that experience and 'expertise' thru the filter of 'creationism', he is not acting AS a scientist and as an expert. I have no problems with someone believing that a God created everything... but I certainly have problems with him denying enormous quantities of interlocking data from multiple sciences which have shown undeniable evidence of HOW that god did it... or how He intended it to proceed.

"evolutionists themselves have a bottom line, non negotiables."

Am I saying something here I swore I would not repeat? Here goes...
   The only "bottom line" science has is to go where the evidence leads! If some details are overlooked, and some theories must be reevaluated because of new data, that is part of the game. If new discoveries in paleontology indicate that specimen X is more closely related to specimen Y than as previously thought, to specimen Z, then that is plugged in and investigated.
Nothing about that necessarily contradicts the basic evidence of general age and composition of any of the specimens.

Any 'expert' who begins with a rule that "the Earth is only X years old and humans have a direct linage from Adam & Eve exemplifies the paradigm of non negotiable!

and..ummm... "widespread acceptance of biblical creation seems unlikely."

Why would you suppose that is? If you find a statue of an elf in your garden, and your neighbor tells you that his grandfather told him that such things happen because real elves make them in secret workshops and sneak them in in dark of night......yet, a store in town sells elf statues and several other people in town have elf statues that they bought.... who do you believe? Real elves favoring you with a statue is in many ways a more interesting story...but.... ☺
   Add in a book your neighbor has telling of elf statues going back for thousands of years and of some of them coming to life and performing miracles, and the story becomes even more interesting.

(Yes, Pete, I know you will dismiss my metaphor as irrelevant... but there may be 'experts' who will believe such a story and assert that carbon dating of YOUR statue is flawed, and those in the store are just bad imitations of REAL elf-produced items.... and so forth...)