From a biology perspective, it may not be totally advantageous to grow in all three dimensions at once. Certainly, as life forms become larger, they also require more energy to sustain, and also become harder to cool (at least for the warm blooded ones). Generally speaking, keeping cool is a matter of surface area (aka skin). But growing double in each of the three dimensions would be 4x more skin than before, but would be 8x more mass/muscle. That's now harder to keep cool.

So growing needs to be done with intention: growing taller nets some survival benefits, such as having longer legs to run. Whereas growing wider or deeper doesn't do very much.

But idk mang, I'm in a food coma from holiday dinner, just shooting from the hip lol

Hmm, I’m pretty tall and high, and I think my hipbones grew like… normal? I don’t know.

Edit: enjoy the ride, space cadet! 💨

Ok, so...tall person here - as I grew into my 6'4" frame I got progressively wider as well. In my later days (kinda old now) my width has increased unproprtionally to my stagnated growth in height. Damn! You just fat shamed me without meaning to! Uncool, dude!!

There is interesting physics in this, because you can look at height and say "double it" but our bones are three dimensional. So, what exactly are we doubling? Our height and girth? But then what about our weight? Our intuition doesn't quite tell us these things.

They are sometimes? It's just gene and expressions. You can be short and wide just like you can be tall and wide, it be either and be slender

Imagine how different our doors would be if we were two feet tall and six feet wide. Try not to imagine twerking.

I dunno, I'm 6'4 and broad shouldered. I've let myself go a bit and am getting chunky but people still act like I'm an NFL linebacker or something. It's weird and uncomfortable when people are openly talking about your physical traits, even if they feel like it's a positive thing.

Tall means higher caloric needs, which means its easier for a tall guy to also be skinny

I am both

I look more like a scaled up person than a conventional tall guy

Isn't the same question why wide people aren't also taller?

I mean right now I think I'm at least 33% pie so...

You can definitely get wider if you put your mind to it.

Imagine we would grow like expanding an image of a baby with locked ratios

That, wouldn't be practical, I guess

My sister and I are both tall and skinny, but also broader than shorter women. Like, my sisters ribs are all visible from every side and she wears a size 6 pants. I know short women who aren’t nearly as skinny for whom size six pants are too big.

All humans should evolve into spheres.

Sometimes they are

They... Do.

I knew a guy who was easily a foot taller than me, and I'm not short at all, he was quite robust. Almost as wide as I am tall.

That's just weight size though, you mean something else. Andre the Giant is an example of that, but he was like that because of a disorder and it's what did him in in the end. So you answer is it happens but it's not conducive to longevity.

nutrition. compare shaq with manute bol. Shaq is well proportioned, Bol is thin

I mean if you lay them on their side…

I am bigger around than a short lady, but proportionally more taller than wider, elongated. I am not sure why it works that way.

What I wonder about more is fat people. My shape is defined by my skeleton, I'm not that skinny but like, my ribcage and hipbones, shoulders are my frame, the outer edges of my body shape. If someone is so fat, how does their body extend far past the bones, what holds it up? Or do they have a wider skeleton?