Please properly define your terms or drop your bogus challenge.
No assumptions means you cannot assume anything.
6000 years is self explanatory.
Scientists have looked everywhere. They have used amazing telescopes, even from space, and have peered into the far recesses of the universe. They have probed into matter and living things at the smallest of scales. They have built large particle colliders to smash particles together with enormous energies and analyzed the results. Mankind has been to the moon, landed probes on Mars, sent probes past all the planets, had close ups of comets, asteroids, and meteors. They have searched the very depths of the oceans, been to the mountaintops, drilled into the earth, been to Antarctica, searched deserts, rain forests, and drilled into glaciers. They have studied the sun, moon, earth, the planets, asteroids, comets, stars, galaxies, pulsars, quasars, star clusters, nova, supernova, neutron stars, dwarf stars, and black holes. They have analyzed proteins, enzymes, organs, and DNA from countless creatures. They have dug up many millions of fossils. They have searched for signs of aliens. They have analyzed tree rings, varves, ice cores, sediments, studied all the radioactive isotopes. They have very many equations, even used computers, and now will try AI.
And for all that, the only thing they have proved is that there is nothing older than 6000 years old without an assumption. On the contrary, they have proved that God Almighty exists, that God created all things about 6000 years ago in 6 days, and that the Bible is true. Here are some pertinent passages from the word of God.
The heavens declare the glory of God; and the firmament sheweth his handywork. – Psalm 19:1
18 For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who hold the truth in unrighteousness;
19 B
ecause that which may be known of God is manifest in them; for God hath shewed it unto them. 20 For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:
21 Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened.
22 Professing themselves to be wise, they became fools, - Romans 1:18-22
I will praise thee; for
I am fearfully and wonderfully made: marvellous are thy works; and that my soul knoweth right well. – Psalm 139:14
Ever learning, and never able to come to the knowledge of the truth. – 2 Tim 3:7
8 And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the brightness of his coming
9 Even him, whose coming is
after the working of Satan with all power and signs and lying wonders 10 And with all deceivableness of unrighteousness in them that perish;
because they received not the love of the truth, that they might be saved 11 And
for this cause God shall send them strong delusion, that they should believe a lie 12 That they all might be damned who believed not the truth, but had pleasure in unrighteousness. – 2 Thess 2:8-12
But
evil men and seducers shall wax worse and worse, deceiving, and being deceived. – 2 Tim 3:13