 Where was I? Okay so chapter, chapter 23 is about randomness and chance and uh those kinds of things and I really like talking about this but um wait what's that? Hello there mind if I barge in? Hey what are you doing here? I'm zoom bombing your class. Zoom bombing? What does that even mean? Well it's this thing where an uninvited guest rudely interrupts an online meeting. Well that doesn't sound very nice why on earth would somebody do that? Don't you understand anything? Okay boomer. Oh yeah well okay zoomer back to you. Okay zoomer I don't even think that's a thing. Anyway I'm not here to do anything mean. I just had a question to ask you. Okay fine ask your question. I've always been curious why do scuba divers always fall backwards out of the boat? Hmm actually that's a good question I don't know. Because if they fell forward they'd still be in the boat. Oh I see it was supposed to be a joke it wasn't that funny in my opinion. Well I would agree with you but then both of us would be wrong. Anyway the main reason I showed up is this to make sure your students knew about today. Uh what do you mean? Did you tell them my today is special? Oh uh no I wasn't gonna mention it. Okay well students today is his birthday so happy birthday and I wanted to ask did you get my birthday present? Yes but why did you get me a refrigerator as a present? I wanted to see your face light up when you opened it. Oh I get it. Hey I got that huge elephant you sent me so thanks I actually had the elephant here in the room. Ah don't mention it. Anyway I just wanted to wish you a happy birthday and say I hope you have a good day starting your 50th year so I'll let you get back to your class. I'm out of here I'm off to Switzerland. Okay well have a great time in Switzerland. Wait Switzerland why Switzerland? Well the flag's a big plus. Okay I'm leaving. Oh by the way you really should get a haircut. Bye for now. Yes I suppose I should. All right he's gone. Happy birthday. Oh thanks. Thanks now you guys know what it's like to be zoom bombed. Sorry. Yes it really is my birthday and I know those were cheesy jokes but those are some of my favorite jokes and like I'm telling people I'm a perfect square all year long so so how old am I? 50. Not quite I'm starting my 50th year which means that I am 49 so perfect square seven squared. Does that make sense like when you're born you're starting your first year you're zero on the day you're born but you're starting your first year so I'm 49 and I'm starting my 50th year. Nice. Anyway I just thought you guys might like to see what's his name come back so all right. I hope you enjoyed that. I wanted to mention two quick things. First this is sort of a part two for a video I did for my students for April Fools earlier this month so if you haven't seen that go take a look and second people keep asking me how I make these videos and so I've made a behind the scenes video that I'm calling behind the screams which describes how you could do this kind of video yourself so thanks for watching please subscribe to see more and I'll see you next time.