How does one define whether the creator created what was intended to be created? IOW how can one tell if there is a creator without knowing the intent of said creator? In more other words, does the creator know it’s creating and if so, how do we know?
I’ll give you a simple analogy from computer programming. A good programmer can write code to perform all the requested functions flawlessly. If not the first time then all the flaws can be eliminated upon subsequent testing.
The problem? 99.9% of the time, the real world wants and needs changes. These often cause the code to include more functions and logic paths. Over time the code can end up going through multiple programmers who may not even have the time to understand all of the logic. They change one or many lines of code to ‘enhance’ the functionality. Along with those changes come bugs - usually hidden bugs.
The point of this analogy? Anyone who studies DNA should quickly realize it represents the ultimate ‘computer code’ for each and every life-form. God declared it good or perfect when completed. The corruption of the fall (sin) has been wreaking havoc on all His intended code (purpose) ever since, with one caveat He does not allow Satan complete dominion over those changes (see book of Job).
For more in-depth answers read all of His book - The Bible.