Keep it short and sweet, folks.
Per The Unofficial Apple Weblog, Apple’s voice interaction system Siri has been updated, this time specifically to ask users to keep it short. Siri’s system doesn’t deal well with longer user queries, so if you happen to ask something that’s just too long for Siri to deal with, she’ll interrupt you, giving you a quote from a famous person, and then asking you to rephrase the question, shorter or in fewer words. Siri herself doesn’t have the authority to change your speech patterns, apparently, so she’s recruited figures such as William Strunk and Thomas Jefferson to make her point more clearly.
So, um, try speaking long sentences to Siri and see if it begins correcting you with quotes of some of the greatest wordsmiths of the past.