This is all just garbled nonsense. We've already explained to you that every appendage at every evolutionary stage is a "fully-formed" appendage. There's no such thing as a "half arm". Evolution doesn't start with an idea of an end goal and painstakingly move towards that goal over millions of years, with many steps along the way being of little or no benefit. Evolution improves gradually on existing formations that are already there and refines them. This is basic biology.
Not all of them. Some of them are just outright dishonest.
The subset of dishonest creationists must be small, because we answer to a higher source than fellow forum posters. We respect people with opposing views as we adore God and try to follow His manner of life.
I'm well aware that evolution improves gradually on existing formations, refining them, as you said, which if we believe as 100% true, gives us in this case:
1) Many, many species were surviving without a cecal appendix
2) 32 separate times, an appendix evolved
3) Despite the "necessity" for 32 iterations, some think it's now vestigial as an organ
WHY?
PS. I've clearly answered the question for myself (evolutionary theory is just-so stories, in large part) and here's your chance to change my mind.
PPS. Saying, "you don't understand basic biology" and "you don't understand evolution" when I successfully completed biology, statistics, anatomy, etc. for multiple degrees is akin to saying, "I don't really have facts for you, just rhetoric."
DO BETTER.
Or, if you like, tell me (or yourself) WHY and HOW evolution gradually improves existing forms without using the canard, "so slowly, that this may be seen neither today nor in the fossil record, except with fully-formed, complete species".
WHY is there no such thing as a half-arm, if some mutations are harmful, some beneficial, how does evolution achieve godlike power to overcome?