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As the European Union embarks on a process of enlargement which could make it a union of nearly 500 million people , there have to be changes to the way it functions . And obviously , there has to be a line . And because trade demands easy transactions , assured payments , and predictable exchange rates , there has to be much more progress toward macro convergence among trading partners . Not to mention that in order to raise the retirement age , there have to be companies willing to retain older workers longer . Also , there has to be much better education out there - too many people in the Circuit Cities and Best Buy stores are still not educated about the HD radio product . Please note that when you do simulation , there has to be a " . Of course , there have to be for-runners , pioneers , whatever who pave the way for the next set to make there work without the same kind of difficulties that the previous group had ... " So , there has to be some bottom lines in the legislation that are n't there right now . But Mr. " Every time I go to Best Buys , there have to be dozens of people buying computers to take home , " Mr. Arriaga said . Within each group , there had to be the observed number of positive outcomes because that is how the data were constructed . After all , there had to be at least token punishment .