While obviously the lecture concentrates on the worst of the worst science (because it's just more fun to debunk), there's a lot of silly science out there that is just real enough that people actually buy it. Just because a show is fiction, doesn't mean we dismiss all the science in it as complete fiction; we don't reject gravity because we saw someone fall down a flight of stairs. We will probably question the physics if they jump off a building and walk away without a scratch, but there's an intermediate area in there that bad science can make it into the public consciousness.
And a new study in the UK backs that up.
• More than a fifth of adults believe light sabers exist.With so many people believing in fantasy technologies, it's no surprise that people can't understand just how poor of science Creationism, anti-vaccination, homeopathy, and the rest are.
• Almost 25 percent of people believe humans can be teleported.
• Nearly 50 percent of adults believe that memory-erasing technology exists.
• More than 40 percent believe that hover boards exist.
• Almost one-fifth of adults believe they can see gravity.
This is why I do the lecture taking hundreds of hours of my time each year to prepare it. It's an introduction to critical thinking and skepticism on grounds that people aren't likely to find offensive. And at the same time, it's a reminder that science can be fun, without being bullshit.