The experience that Picard had at death bed in "Tapestry" have always intrigued me, when battling death, did the events of Picard being given an opportunity by Q to relive his past an correct his mistakes a reality? Or were they just hallucinations or near death experience effects, like a dream or something? In this page, I found this paragraph to suggest that it was actually true, am I mistaken ?
"Picard and Riker speculate afterward that the near-death experience was merely another test by Q, but do not speculate whether or not the injury was Q's work. Picard states that whatever it was, he needs to thank Q for showing him how important his decisions in life were"