human tails and the midriff - hiccups, what are the creatonist theories about them?

1) we all know the hiccups, sometimes pretty anoying and irritating.we humans still have hiccups, a trait that the fish and the amphibians, still have for surviving in the water, a necessityFor what are hiccups needed? It is an involuntary contraction of muscle groups in our breast and throat - involuntary, because, did you ever try to stop hiccups by will allone? The hiccups arises as we suck up air, while the epiglottis, the hood on our respiratory tube, that our throat closes, snaps.For amphibians, such mechanism was of utmost importance, for us humans it is not, (except for the rare occasions we fall into a canal ) But we inherited the nerval systems for those mechanics from our predecessors. the nerval sytem traces from our brains to our midriff: the nervus phrenicus. and when there is irritation (like pressure) on that nerve, there is a possibility of hiccups.If there would be an intelligent design, wouldnt it be more intelligent just to leave that out, or make the starting point of the nervus phrenicus near the midriff itself instead of near the cranus?2) the human tails? what are the theories about those?Numerous medical and scientific papers documenting such cases from around the world can be found here:
[The human tail. Report of a case of coccygeal retroposition in childhood] - PubMed

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