1.   Left to right strategies consider only those word matches whose left-hand end corresponds to a possible utterance initial boundary.

2.   An island-driving strategy will be seriously misled by these extraneous word matches.

3.   Lexical access in turn produces a list of word matches over some portion of the utterance which are ordered by score.

4.   They do not include possibly correct but low scoring word matches.

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.

6.   Sophisticated higher-level procedures must prune these perfect, accidental word matches before they combine exponentially into a huge space of alternative partial interpretations.