It's the scientific principle...nothing is written in stone until it can be proved, verified, beyond the shadow of a doubt. You apparently see that as a weakness whereas a thinking person would see that as a plus and the only way to find answers. If your theory is wrong, you admit it and move on, searching for the truth. But apparently people like you aren't interest in truth. You most likely grew up in a family that had a particular belief system (didn't we all) and that's where your intellectual curiosity ends. I feel sorry for you.
But little if anything in evolution theory has been proven and verified. The fact they have to keep modifying the theory proves that. Saying that they are modifying the theory in search of the truth doesn't overcome the fact that nothing's been proven in the first place. Nor does ridiculing those who take the Bible as fact.
Theories of physics or chemistry don't undergo these constant modifications. There have been lots of new theories in those disciplines over the years, but they don't contradict the ones that have already been accepted. Nor could they, since they had been proven by controlled experimentation. They simply add to them.
Don't feel sorry for me. I was fearfully and wonderful made in the image of God. You evolved from a puddle of slime. I think I better start feeling sorry for you.
P.S. Say hello to your great, great, great, great grandfather Cheetah for me. LOL!
I think you are confusing law with scientific method. In the scientific method their are several degrees of certainty. We begin with a hypothesis and setting out to prove or disprove it, we arrive after many tests by many men at a theory. Then finally we reach Law. But most of the "laws" of previous centuries have been discredited, and the underlying supports for modern science have lost their sure foundation.