On Friday, The Big Bang Theory took over Ballroom 20 at San Diego Comic Con 2015.The panel started with a sizzle reel of the funniest moments from The Big Bang Theory’s most recent season, including Raj suggesting the group uses a van to pick kids up and bring them to their comic book store. To kick things off, the writer’s began chatting about how the time travel discussion scene came to be, revealing that they basically had the conversation and wrote it down on a white board ending up with that conversation becoming featured in the show. Raj joked that the best part of the scene was watch the rest of the cast struggle to get their lines down while he sat by and watched but was still a part of the scene.