 4d is just time introduce time here. You won't understand four dimensions. Watch this here. I'm gonna take this down Here's four dimensions grizzly grizzly Dean, okay You're gonna call up a friend of yours, right? You guys want to go to a movie? Okay Back in the day where you could go to movies Right and you know of a movie theater. It's downtown and it's big building right the whole building is a movie theater right and the movie theater is on the corner of first oops That's not a one first street and What's a good street name What's a great good street name first street and Chico Boulevard No That's too much How about grizzly Boulevard, right? Grizzly Boulevard. This is grizzly Boulevard. Here's the building now. You call up your friend grizzly and Chico Charming sorry guys. I'm a little hot so I just pictured Chico was about to go you don't understand it grizzly here Let me show you then just ends the stream I'll check this out grizzly you call up your friend and say hey Bear Right Let's go to a movie. Let's go to a movie. That's on the corner of first Street and grizzly Boulevard. So this is your x-axis Right, this is your y-axis Okay, and the movie we want to see is on the seventh floor You're on this floor right here seventh floor right 1d 2d 3d you're on the seventh floor Right and your friend bear says grizzly done deal. Let's go. I'll see you there and Hangs up. Have you guys made a date? Is it gonna work out for you guys? Is it gonna work out for you guys is there any other information? So it's just time. It's just time That's all grizzly. You got to tell them what time you could go there 10 minutes after you've left Maybe you thought the movie the movie you guys want to go see was a 2 o'clock, but you forgot to tell him Right, and he thought it was 4 o'clock. So you go there at 2 o'clock. He's not there. You're all pissed Right the movie starting you already missed the trailers. Oh, you missed the trailers good thing You missed the commercials at the beginning you missed the trailers too now. You're all like edgy, right? And once the movie starts you can't just walk in right because you missed the first little clip right So you're all pissed you go home and then bear shows up 10 minutes after You've left right because he's early or she's early or they are early Right, they want to get popcorn play video games. Maybe there's some pinball machines. There's there and stuff in ball machines and we did right and Bear is there waiting for you to show up before o'clock and Says no, I'm not leaving right until grizzly shows up. He could be there forever So fourth dimension is just time