I'm currently working on a story where a girl is shipwrecked on an island. The island she ends up on is unknown to the rest of the world. However, it is the size of Hawaii which is very large. In order for my island to stay hidden from satelites, I need to turn back the clock to a time when there were none. I'm thinking sometime in the 20's. Now, Lita starts the story off on the island, and never actually returns to the outside world, so we never encounter the world of the 20's. My strength in my writing is in my dialogue. It's where I do my best work. However, if I were to adjust my style to account for the change if dialect, to change it to the lingo of the 20's, my writing would suffer greatly. My question to you, does it bother you to read a novel, knowing full well the date it takes place, with dialogue that belongs in present day? You should also know that I tend not to use current slang heavily. Just the usual things like "awesome", "cool", etc. Would you rather I had her speak according to the times, or is it enough that her character and personality are true to her time period?