Auto suggest is a common and well-liked feature of Google's search bar - it can save you time and get you where you're going faster, backed up by common searches by other users who've probably been after the same results.
Throw that in to Google Calendar, however, and things aren't quite as rosy.
The context of the user activity is entirely different, chances are by the time you're putting something in your calendar you know what you're up to.
Follow the article to see a spot-on example of when suggested search results have no place and actually distract from the job to be done.
Searching the web is likely to be an expansive activity: You often don’t know exactly what you’re looking for, so you will probably welcome a discovery from the far-flung universe of possibilities. But creating an entry in your calendar is the opposite. It’s a narrow, personal, intimate activity. You know precisely what you mean and want. A calendar entry reflects the comparatively small circle of people and topics and places you personally deal with.