Some lead might have been created from supernova fusion, probably. I'm not actually sure if it's the right isotope or if lead even has radioactive isotopes that we know of

We can't prove that the world we live in wasn't created last Thursday, with our memories, the growth rings in trees, and so on created by a (near) omnipotent trickster to deceive us. But science and rationality give us tools for determining what's worth taking seriously, and sorting out the reasonable, but unconfirmed, claims from the unverifiable hogwash.

We can't know anything with 100% certainty. We can always imagine some razzle-dazzle, imagined scenario to counter the rational explanation if we like.

The point of the scientific method and logical reasoning is to pick the explanation with the most evidence.

The existence of a god is something that can't be disproven. You can always find gaps in knowledge and explain the gap by saying a god / multiple gods did that. As gaps narrow with more knowledge, you can always just say that the holy books were just a metaphor in this one case, but the rest of it is literally true.

It gets even more complicated when you run into people who refuse to believe in any science, or anything outside their own personal experience.

Personally, I believe the Earth is a sphere. I've been to Australia, Europe, Africa, Asia and North America. The time the flights took and the routes the in-flight maps showed make sense for a spherical earth. So did the scenes visible out the windows, and the day/night cycle. The mere existence of time zones and seasons strongly suggests the Earth is a rotating sphere tilted slightly off vertical. But, it could be that I'm living in a Truman Show world, where everything is a lie designed to make me believe something that isn't true. I haven't personally done all the math, all the experiments, etc. to prove the Earth is a sphere. And, if this were a Truman Show world, the producers of the show could mess with my experiments anyhow.

For someone who doesn't want to believe, there's really nothing you can do to make them believe. The world really relies on trust and believing Occam's Razor.

How did the matter that constitutes the universe come into being? What was the single point that signifies the beginning of time? What set time in motion? Will time continue after the death of the universe?

None of it is worth trying to wrap our tiny little monkey brains around as far as I'm concerned. Go have a pint and listen to music that makes you happy.

Yes, it's in your brain.

https://wwwrcamnl.wr.usgs.gov/isoig/period/pb_iig.html

Lead-204 is the only isotope that doesn't derive from radioactive decay, and it represents only 1.4% of the lead on earth.

Which raises the question of why he would create a planet with the illusion of age and send you to hell for falling for his own trick.

I always found it funny how they'll sometimes try to justify their claims scientifically to give it an air of legitimacy. If god created the stars close to one another and expanded them to fill the sky over a single day, the skies would be dark for billions of years. A YEC could easily say "oh well god put the light there to make the stars look like they've been in the sky for a long time" but very often they just don't have an answer because they didn't think of one. Unfortunately, there's almost that will stop them from doubling down on their beliefs and just becoming more prepared for the next person they talk to

Of course, the universe was actually created in 1970 and anyone claiming to be older than 54 is an agent of Microsoft sent to test your faith in Unix.

Earth will be created in 2036. This is just a rehearsal.

"It Is Useless To Attempt To Reason A Man Out Of A Thing He Was Never Reasoned Into." - Jonathan Swift

“God did it to trick you” is pretty hard to disprove

It's an ad hoc argument. You can't argue against any ad hoc arguments with logic

So even if you’re working strictly from the bible, how the hell do you get 4000 years?

You can't. The "Young Earth" people are morons.