Your choice of least "facepalm-able" space travel mechanism If I may use the "facepalm" meter of Sci-Fi hardness. Examples The film Gravity, in which only the astronauts in your audience would complain loudly about technical details such as how quickly Sandra took off her space suit, has an incredibly low facepalm index. Whereas, in 2012 a boffin runs into the room proclaiming that the neutrinos have mutated and they're gathering in the Earth's core. At which point more than half the audience facepalm, giving this film a high facepalm index. And just for the sake of completeness let's use a highly subjective scale in which; An fp (φπ) index of 0 means no-one in your entire audience in the whole world would facepalm at a particular notion. An φπ index of 1 means every single audience member will collectively slap their foreheads in disappointment at a particular notion. So, I'm looking for various space travel mechanisms used in science-fiction and fantasy (in any medium) and your φπ index. Remember, just because a story features FTL travel doesn't automatically give it an φπ of 1. Personally, however, I'd give FTL by Spice a higher value than FTL by Alcubierre drive.