This sentence appears in our school newsletter this week: *The use of technology is not an addition to the curriculum, it is a change in how curriculum is delivered. * Could you explain why this sentence and others like it are, evidently, legitimate sentences rather than examples of run on sentences. I see professional authors doing this type of sentence repeatedly, and I'm confused by it. I personally would use a semi-colon rather than a comma just because someone taught me that not joining sentences with commas was a rather basic requirement. Help! Dolly [log in to unmask] Sargent