Ok I take your point on the practicalities of one language for doing business, tower of Babel and all. But if you take the long view (and hope) this EU project is in for the long haul then I believe such practicalities will sort themselves out, maybe it will be English as a successful international language, maybe German as the economic power house of Europe but in the short term we should encourage multilingualism in our citizens.
I think Britain and Ireland have perhaps the worst track record in bringing up our kids with more than one language. In Ireland the most successful people speak Irish and English and learning a second language at an early age makes learning a third or fourth a lot easier.
http://[URL="http://www.csmonitor.com/world/europe/2010/0126/is-once-maligned-irish-language"]www.csmonitor.com/world/europe/2010/0126/is-once-maligned-irish-language[/URL]
Water will always find its own course and I think the language for doing business will in the end be decided by business men/women. But for the Union to continue forward I think it is essential we bring as many of the people with us as we go and if that means spending money on minority languages then so be it, its good for democracy and its good for the Union.