Until you are able live long enough to observe and prove the claims made by the theories of evolution, they are just that - theories, not facts, and certainly not true science.
Bringing back the comment of the half-life of U238. If one person has to live long enough in order to observe the fact, then I guess the science behind decay isn't a true science, as you would put it.
After all, the human life span is roughly 80 years (in developed countries, that is). Since we've only known about decay for roughly 100 hundred years, we have not as a species or individually lived long enough to see C14 decay, to Argon decay, to see U238 decay (through one complete half-life, that is).
In fact, no one has lived long enough to see pluto completely revolve around the sun once. We've only known about pluto for almost 80 years. Pluto's orbit is 249 years long.
We haven't lived long enough to see us completely revolve around the milky way galaxy. I don't recall how long it would take, but we're talking hundreds of thousands of years.
No humans were alive the last time yellowstone blew its lid. And yet we know it did. I guess that's just a theory, right, since we didn't live to observe it.
Do you know how absolutely ridiculous you look making these claims?
Is it just perhaps possible that you can actually work backwards from what you know? That you don't have to have observed pluto's complete orbit to know it's going to be 248 years? That U238 has a half life of 4.47 billion years? That the evidence for a yellostone eruption is similar to that of volcanoes erupting today, albeit on a much larger scale? That the evidence of the change in alleles over time, the observed mutations, the observed speciations, means that evolution does indeed happen, and that the theory does explain what we see? Of course.
It is readily apparent that you know not the slightest thing about how science works. So please, learn how science works, and learn some biology and evolutionary biology.