did you never wonder why road signs have eivissa, sant antoni rather than ibiza and san antonio? you are correct in questioning the logic behind the necessity of catalan in many jobs when all catalan speakers are bilingual. why would you restrict your search for a chief neuro-surgeon at the hospital to a labour market of 10% of the population because of this? in san jose, the first questio on the application to be a taxi driver is not, can you drive, or have you got a license, not even do you have any idea of the geography of ibiza, but can you speak catalan! ironic when 90% of summer clients in taxis don't even know what catalan is.