With just one week left to go until TED 2014, our speakers are putting the final touches on their talks. But that’s hardly all they’ve been up to. This week, check out which speaker has a bold prediction about artificial intelligence, which one put out a call for a more creative condom design, which one wrote about the science of goat arousal and which launched a defense of Justin Bieber.

Futurist Ray Kurzweil has made a striking new prediction: 2029 is the year computers will surpass human intelligence. At that point, they’ll be able to make jokes, learn from experience and even flirt, he says. […]