There is a big problem of literacy. Most peple cannot spell words with surplus letters. Many adults and children ar baffld permanently by them. e.g. guardian, guarantee, discipline, thorough, through . http://home.vicnet.net.au/~ozideas/spelling.htm#word
home.vicnet.net.au/~ozideas/spelling

2011, Yule, Valerie 'Recent developments which affect spelling. On the possibility of removing the unnecessary difficulties in English spelling, while leaving the basic appearance of English print intact.' English Today, 107, vol 27, No 3. Sept 2011, pp 62-67 http://journals.cambridge.org/repo_A839oLF6