I have seen and read some other post here about Past and Present Tense in a story. None seem to cover my issue. I am writing my sci-fi story in Present Tense... As I read it, Present Tense makes me feel like it's happening now, not being told to me after the fact. That aside... The first four chapters of my book deal with the back story (in a way)... Would it be wrong to change the tense to past on these four chapters and keep it present tense for what's happening now? Also, my main character has several moments when he's remembering something from his own past. Would it also be wrong to write these memories in Past Tense?