When a writer belongs to a society which is not very scientifically advanced, creating organizations like NASA and characters like indigenous Scientists would look terribly out of place. And, if the writer decides to set his story in any advanced society, his characters might look contrived, because he might not be fully aware of their culture. How does the Writer break this deadlock?
There are basically 5 stages that worlds go through as they develop (read more here: http://www.bang2write.com/2013/05/top-5-tips-for-writing-science-fiction-by-robert-grant.html) and some the best sci-fi takes place in the period of transition from one stage to the next. By choosing to set your story between two world stages you get to watch both society and individuals struggle with change, you can bend the rules because they are not fully established and you can compare and contrast what was and what will be. If you can't decide when to set your story then it sounds to me like you should choose a transitional period and write from there.