@Robusto There's a whole lot going on here. There's the initial 'is idiosyncracy (far from one-to-one mapping) helpful in transmission?', there's 'is redundancy helpful?', there's 'spoken vs written', 'ideographs vs phonological writing', 'learners vs experts', '
whole word vs '
phonics', and the meta-issues of 'black and white dichotomy vs continuum', 'correlated but not identical arguments', etc