i read about people growing in a pc case

i read about people growing in a pc case , or spaces that are "2 x "3 x "5 etc, how the hell can you grow in small spaces like that,
what size are the plants,
are they bonsai trees or something, wtf,
i cannot get my head around it, what size are the plants, what is the yield, how long until harvest etc.

I use to get 2oz dried from my PC case grows back in the day, soil. Its very doable, and if thats all you got room for,.. or can get away with,.. or just wanna try,.. ain't nothing wrong with it imo. Plant harvesting time is strain dependent, the same in or our of a box. Short growing strains tend to make life easier, but i seen a guy once grow one plant to the roof of a pc case, then train it right back down to the floor, ha