 FACT: When Dr McCoy analyzes the crystals on the USS Exeter, he  identifies them as the crew members bodies after water is removed.  He says the human body is 96% water and does a tricorder analysis of  the remaining 4% and reports it as 35% potassium and 18% carbon. His  percentages are either wrong mathematically or physiologically. The  96% figure refers not exclusively to water but organic elements,  which includes body fat and sugars in addition to water. While  carbon does account for 18% of the total body mass, after removing  water the percentage should have been 74%. The content of the  minerals is also incorrect. Calcium accounts for 38% and potassium  accounts for 10%, not the stated 35%.