# The Big Bang Theory, Season 12, Episode 5 (October 18, 2018) -- "The Planetarium Collision" **URL:** \ **Category:** Cafe Society\ **Created:** [October 18, 2018, 1:28pm UTC](https://boards.straightdope.com/t/the-big-bang-theory-season-12-episode-5-october-18-2018-the-planetarium-collision/823139 "2018-10-18T13:28:23Z")\ **Posts on this page:** 8\ **Page:** 2
**Author:** ![zoid](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/zoid/32/336_2.png) [@zoid](https://boards.straightdope.com/u/zoid)\ **Post date:** [October 20, 2018, 4:06am UTC](https://boards.straightdope.com/t/the-big-bang-theory-season-12-episode-5-october-18-2018-the-planetarium-collision/823139/21 "2018-10-20T04:06:40Z")
It would be hilarious if in the last episode they all moved out of the building and the elevator got fixed. Last scene as they’re walking out of the building for the last time: Leonard: Hey look! They fixed the elevator! Penny: Son Of A Bitch! ---
**Author:** ![Robot\_Arm](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/robot_arm/32/18280_2.png) [@Robot\_Arm](https://boards.straightdope.com/u/Robot_Arm)\ **Post date:** [October 20, 2018, 5:47am UTC](https://boards.straightdope.com/t/the-big-bang-theory-season-12-episode-5-october-18-2018-the-planetarium-collision/823139/22 "2018-10-20T05:47:36Z")
> [@JohnGalt](#): > > She needs to take off her glasses more often! Leave them on. ---
**Author:** ![Andy\_L](https://avatars.discourse-cdn.com/v4/letter/a/c67d28/32.png) [@Andy\_L](https://boards.straightdope.com/u/Andy_L)\ **Post date:** [October 20, 2018, 4:41pm UTC](https://boards.straightdope.com/t/the-big-bang-theory-season-12-episode-5-october-18-2018-the-planetarium-collision/823139/23 "2018-10-20T16:41:27Z")
> [@jayjay](#): > > Just for my own understanding, the whole “how many flights of stairs” thing was a snarky callback to the fact that the number seems to change from one scene where they’re talking while walking up them to the next, right? Because my first reaction to Leonard’s insistence on 3 flights was the thought that it was more than that. Penny thought “We’re on the fourth floor - therefore there are four flights of stairs.” Leonard (who probably has done enough programming to be aware of fencepost errors [Off-by-one error - Wikipedia](https://en.wikipedia.org/wiki/Off-by-one_error)) knows that being on the fourth floor means that you need to go up only 3 flights of stairs (unless you’re in the UK, where the floor you’re on after you go up one flight from the ground might very well be called the first floor [The ground floor and first floor in British and American English – Speakspeak](http://speakspeak.com/about-english/ground-floors-and-first-floors-in-british-and-american-english)). Penny has to check because she can’t picture the situation in her mind and she’s never really thought about it (when I’m walking up stairs, I’m usually thinking of something other than the number of flights I’m traveling up). ---
**Author:** ![teela\_brown](https://avatars.discourse-cdn.com/v4/letter/t/d9b06d/32.png) [@teela\_brown](https://boards.straightdope.com/u/teela_brown)\ **Post date:** [October 22, 2018, 7:02pm UTC](https://boards.straightdope.com/t/the-big-bang-theory-season-12-episode-5-october-18-2018-the-planetarium-collision/823139/24 "2018-10-22T19:02:11Z")
I always like the Raj in the planetarium bits, because Kunal Nayaar looks so good in his suit and it’s a nice change to see him confident and self-assured. I always hoped a woman in the audience would think so, too, and end up being his permanent girlfriend. But it’s back to Anu next week. Ick. ---
**Author:** ![peedin](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/peedin/32/14095_2.png) [@peedin](https://boards.straightdope.com/u/peedin)\ **Post date:** [October 23, 2018, 6:41pm UTC](https://boards.straightdope.com/t/the-big-bang-theory-season-12-episode-5-october-18-2018-the-planetarium-collision/823139/25 "2018-10-23T18:41:18Z")
When did Amy start working at Cal Tech? Or was she always there? ---
**Author:** ![bump](https://avatars.discourse-cdn.com/v4/letter/b/7c8e57/32.png) [@bump](https://boards.straightdope.com/u/bump)\ **Post date:** [October 23, 2018, 6:52pm UTC](https://boards.straightdope.com/t/the-big-bang-theory-season-12-episode-5-october-18-2018-the-planetarium-collision/823139/26 "2018-10-23T18:52:38Z")
> [@peedin](#): > > When did Amy start working at Cal Tech? Or was she always there? As far as I know, she’s been there all along. ---
**Author:** ![MrAtoz](https://avatars.discourse-cdn.com/v4/letter/m/45deac/32.png) [@MrAtoz](https://boards.straightdope.com/u/MrAtoz)\ **Post date:** [October 23, 2018, 8:30pm UTC](https://boards.straightdope.com/t/the-big-bang-theory-season-12-episode-5-october-18-2018-the-planetarium-collision/823139/27 "2018-10-23T20:30:10Z")
> [@peedin](#): > > When did Amy start working at Cal Tech? Or was she always there? Amy came to Cal Tech in Season 7, Episode 5, “The Workplace Proximity.” I don’t think they ever specified where she worked before that, but they definitely used a different set for her lab than they do now. ---
**Author:** ![bump](https://avatars.discourse-cdn.com/v4/letter/b/7c8e57/32.png) [@bump](https://boards.straightdope.com/u/bump)\ **Post date:** [October 26, 2018, 2:43pm UTC](https://boards.straightdope.com/t/the-big-bang-theory-season-12-episode-5-october-18-2018-the-planetarium-collision/823139/28 "2018-10-26T14:43:18Z")
> [@MrAtoz](#): > > Amy came to Cal Tech in Season 7, Episode 5, “The Workplace Proximity.” I don’t think they ever specified where she worked before that, but they definitely used a different set for her lab than they do now. She was always in the area- I guess it’s possible she was working at another university in the greater Los Angeles area before coming to Cal Tech. [Previous page](https://boards.straightdope.com/t/the-big-bang-theory-season-12-episode-5-october-18-2018-the-planetarium-collision/823139.md?page=1)