Having just read "A Stranger in a Strange Land'' (also by Heinlen, about the same year) I have to agree. While Stranger has a very retro-futuristic feel to it (language, technology, culture, etc. all very clearly come out of the '60s) Troopers, at least in part due to its influence on modern sci-fi, hardly feels dated at all.
Having just read "A Stranger in a Strange Land'' (also by Heinlen, about the same year) I have to agree. While Stranger has a very retro-futuristic feel to it (language, technology, culture, etc. all very clearly come out of the '60s) Troopers, at least in part due to its influence on modern sci-fi, hardly feels dated at all.