Now, we know that all radioactive substances decay at specific (to each element), constant, exponential rate. This is what the term half-life is all about. It even has practical applications! Nuclear science as we know it wouldn't be possible without this knowledge. This includes everything from nuclear reactors, to surgical dyes, to gun sights. It's so straightforward they teach it in highschool.
This assumes that there were no changes in the Earth's parameters ever since.
We can't KNOW it, but only ASSUME.
Use proper names for different things.
Knowing this, it's possible to look at the composition of rocks and make a very good estimation of how long those rocks have existed, and thus a minimum age of the Earth. People have been doing it since 1905. Based on those experiments, we knew that the Earth was at least a billion years old. As we did more work with the technique, we found new combinations, and were allowed to run multiple tests. Turns out they all agree well that the Earth is approx. 4.5 billion years old.
They all ran the same mathematical program.
Of course they got the same results.
But who said that the PROGRAM is not an error?
Now, you might foolishly scoff, and reply as you have oh so many times that "NOBODY COULD EVER HAVE BEEN THERE SO HOW CAN WE BE SURE THE METHOD WORKS!?!?!?!?!?!" in that poorly formatted way of yours. But then you'd look like an idiot, since we can test it. I'll explain how.
OK, let's see.
We can use radio-carbon dating to establish how old dead things are. They tend to agree very well with the historical record. We can also use optical dating to date things that are even more recent than that, where the record is even more established. We're talking about things that happened less than 2000 years ago. There's not a lot of disagreement about how things went down. And if that still isn't good enough, given the occasional spottiness of the historical record. In that case you have 36CL dating. Chlorine-36 is exceedingly rare; there's only one known natural reaction that produces it, and if someone from 1940 picked up a rock, they'd be lucky to find any. But then something changed: airborne nuclear testing. The radiation was able to produce vast amounts of Chlorine-36, which we can use to reliably date very recent events, where the historical record is rock solid.
Nah, nothing new.
You still assume, that AT NO POINT IN THE PAST, there could NOT be an event that changed something drastically.
And we can't even know, when it happened.
So, we can't even say, which results are depending on this, and which are not, thus correct.
So in the face of a tested method, proven principles, and well controlled and independently replicated experimentation, we can conclude very comfortably that the Earth is approx. 4.5 billion years. And then it just so happens that every other piece of evidence we have agrees with that conclusion.
I see nothing TESTED.
I already explained, WHY.
I can write a fancy program, that will mathematically prove to you, that 2+2=6.
I just need to program it, so that 2=3, as a part of the program itself.
Can you test the results? Sure.
Are they really correct? Very funny.
Though I'm sure none of that matters to such a devout individual as yourself. I'm sure you have some divine knowledge to explain why thousands of people who have come before you were wrong, and you're some modern day prophet, come to enlighten us all as to the magnitude of our buffoonery.
Not wrong - unproven.
Again, using the same wrongly programmed mathematical program will result in the same results countless times.
Yet, the error is in the programming assumptions, not in the testers.
You need to be sure to check the program for wrong assumptions, not JUST the output.
And this exactly means - personal experience of events.
But I'm sure, this example won't change anything - cause "I'm just a stupid fanatic, that knows nothing about science", suuure.
