How could duplicate content be valuable and why question no indexing it?
My new client has a clever african safari route builder that you can use to plan your safari. The result is 100's of pages that have different routes. Each page inevitably has overlapping content / destination descriptions. see link examples.
To the point - I think it is foolish to noindex something like this. But is Google's algo sophisticated enough to not get triggered by something like this?
http://isafari.nathab.com/routes/ultimate-tanzania-kenya-uganda-safari-july-november
http://isafari.nathab.com/routes/ultimate-tanzania-kenya-uganda-safari-december-june