Readers are "dumb" because they are not privy to the mind and intentions of the writer; and the failure of the unsuccessful writer is a failure to forecast what it is going to be like to be a dumb reader of the document. Sample sentences from students' writing illustrate the following types of writing problems, which force the reader to examine…

Thirty informants were presented with sets of clauses punctuated as in the pattern "S1. If S2. S3" and asked which clause, S1 or S3, the "if" clause modified. Independently, several linguists judged the sentences "S1, if S2" and "S2, if S3" acceptable. Missing intonational clues or improper punctuation,…