This question already has an answer here:
I'm searching for a science fiction book, with the twist that I haven't actually read this book. I have only heard the outline of the plot of it. But I'm fairly certain that it is indeed a book, and not some plot I dreamt up myself.
It goes like this:
- Due to some silly oversight, humankind has never discovered anti-gravity and faster-than-light travel, something other species usually discover around their corresponding stone age.
- Somewhere around the modern day, an alien fleet lands on Earth, armed with spears and shields, and demand that humans surrender and become their slaves.
- Obviously, the aliens get steamrolled by cruise missiles and tanks and electronic communication, which humans were forced to develop due to being stuck on their own planet without knowledge of anti-gravity.
- Humans steal the alien technology and go into space.
Additional info: I read the plot description in English (but that doesn't say much) in an English speaking online forum which is long defunct. I read it somewhere between 2000 and 2005.