Bill Gates wants you to invent the condom of the future
Sex (as long as it is consensual) pretty much always feels good. Because, you know, it is sex.
But global public health advocates understand that due to cultural stigma, social pressure and generic "it just doesn't feel the same" whining, people still aren't using condoms at the rate that they could be given how widely available they have become.
So with that in mind, the Grand Challenges in Global Health Initiative, with support from the Bill and Melinda Gates Foundation, put out a call for a better designed, more pleasure-inducing condom. The challenge is to make an experience-enhancing condom that will make men and women go weak in their desire to have protected sex! For the good of humankind!
The problem (emphasis mine):