Analysis of "C" and "K"

It has recently come to my attention that merely 26 letter make up our endless amount of words in the English language. That is such a perplexing thought. Twenty-six suddenly seems like am incredibly small number. With this in mind it would be logical to assume each and every letter if the 26 is of great importance. But I beg to differ, two letter have unfortunately been overlooked. I believe that the letters "C" and "K" have messed up such a wonderful concept. Or in the least, brought it into question. They both make the same sound and although words would not look quite the same they are very interchangeable. I find it unnecessary to have both letters. Of course, there are some other letters that make similar sounds to one another but even those very letter contain their own special sound and pronunciation that makes that one letter, that one letter. I feel as if this can be an (okay) comparison made to people. Say every person is composed of 26 letters. Now there are, as stated before, endless words (combinations) of those 26 letters. And so there are people like "c(k)at" "dog" and "frog"; and then there are people like "k(c)angaroo" "elephant" and "rhinoceros". Different people, but they are essentially comprised of the same 26 letters, or qualities. If a quality were to be given to ever letter would the qualities if "C" and "K" be the same? Would that be right? (I don't feel it would be) are we all only really comprised of 25 letters with the 26th letter left to be chosen by ones' self. Is it this intangible and possibly imaginary letter that is the very quality that makes any one person so uniquely different from the next? It would be easier to hold on to this concept if it were out dimly like this: We all have 26 letters, at the start. Once you figure out that your "C" and "K" letters are the same and only look different, you open yourself up to the idea of having a 26th letter on your creation. It is this letter that we often do not disclose to many people? Is it the silent letter that completes the words that most people leave out when spelling?