I just grabbed that as one example, every area that touches on evolution and long ages is based on assumptions.
Is an assumptions proof? No it is not.
If a foundation is faulty, everything built upon it is also faulty.
I recommend you read a short article written by Glenn Morton, a Christian geophysicist: "Why I Left Young-Earth Creationism" (published at peacefulscience.org).
Here is some of what the article has to say regarding how out of touch YECs are with scientific reality:
"Morton then said that he had hired (on behalf of the oil company he worked for) several graduates of Christian Heritage College, and that all of them suffered severe crises of faith. They were utterly unprepared to face the geologic facts every petroleum geologist deals with on a daily basis."
Morton says:
"But eventually, by 1994 I was through with young-earth creationISM. Nothing that young-earth creationists had taught me about geology turned out to be true.
I took a poll of my ICR graduate friends who have worked in the oil industry. I asked them one question.
“From your oil industry experience, did any fact that you were taught at ICR, which challenged current geological thinking, turn out in the long run to be true?”
That is a very simple question. One man, Steve Robertson, who worked for Shell grew real silent on the phone, sighed and softly said ‘No!’
A very close friend that I had hired at Arco, after hearing the question, exclaimed, “Wait a minute. There has to be one!” But he could not name one. I can not name one. No one else could either.
One man I could not reach, to ask that question, had a crisis of faith about two years after coming into the oil industry. I do not know what his spiritual state is now, but he was in bad shape the last time I talked to him."
Exodus 20
11 For in six days the Lord made the heavens and the earth, the sea, and all that is in them, but he rested on the seventh day
The planet earth includes the sea, so why does this verse say "the earth" AND "the sea"? That's a tautology.
Exodus 31:17
It is a sign between Me and the sons of Israel forever; for in six days the Lord made heaven and earth, but on the seventh day He ceased from labor, and was refreshed.”
The "heaven" in that verse refers to the earth's atmosphere, called "heaven" in Gen 1:7-8 ...
"And God made the firmament and separated the waters which were under the firmament from the waters which were above the firmament. And it was so. And God called the firmament HEAVEN".
The "earth" in Exd 31:17 refers to the dry land created in Gen 1:10 ...
"God called the dry land EARTH" (emphasis mine throughout)