1.   Island-driving strategies perform this initial scan over the entire utterance.

2.   This condition is not sufficient to guarantee that the correct answer has been found because more than one hypothesis may span the entire utterance.

3.   This might be integrated with lower level processing, or after all lower level processing has been performed on the entire utterance.

4.   Secondly, the phrases extended over the entire utterance thus causing a potential combinatorial explosion of partial interpretations at higher levels of processing.

5.   We have shown that these word matches occur so frequently that competing hypotheses cannot be pursued and compared over the length of the entire utterance.