Besides, you know, the whole Internet thing.
For every dumb idea (such as the "gay bomb" mentioned previously), there's an AWESOME idea. Like regeneration.
Danger Room reports that DARPA is working on being able to grow human muscle outside of the body to be put back in in the case of extensive injury, in order to prevent scarring and keep limbs working. This is just the first stage in eventually being able to replace lost limbs! This technology will be very useful for everyone. Here's hoping it works out.