Christian answering questions.

[Cherubim]

No, I asked what you think the word 'observation' means in a scientific context, not an example of what you think it isn't.

Observational science is something that can be tested and confirmed over and over again. It can be observed by the eye.

The only thing we do observe is genetic loss. Not gain. Without new information being added to the gene pool, you're not going to have evolution.
An atheist believes a caveman used his teeth and now it's vestigial because we've evolved past that.

A Christian believes sin entered the world and we're losing genetic information each time we reproduce. This is confirmed by science, over and over and over again.

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Are all the scriptures given by inspiration of God, and are they profitable for doctrine, for reproof, for correction, and for instruction in righteousness ??

Yes. Every single letter, literally.