If you are a bra designer

I sometimes wonder what bra makers are thinking. Most bras have a couple of hooks in the back. When when the size goes up to 40, (this is the measurement of the ribs, gentlemen) suddenly there are four hooks there. No matter what the cup size is.
So.
If your average stripper is a 28DD she has two hooks on the back. But if she were a slightly chubby flat chested stripper wearing a 40B, she would have 4 hooks. My question is, what in the hell are the four hooks supposed to do?! Does a B cup (B-cup, think Uma Thurman gentlemen) really need something the width of a weight belt running across her back? It's not like her B cups need the extra strength to support their weight. The bigger around the ribs, the more hooks the bra has.
I know what you are thinking. There are more hooks because the width around is bigger... but that doesn't make any sense either. I mean, what are they thinking that because it's bigger around that it needs the extra hooks, so it doesn't... what? break? Like they aren't making the 40 bigger than the 28 in the first place?
This makes no sense to me.
So if you are a bra designer and you are reading my blog, send me an email to explain this nonsense to me. If you are a bra designer and would like to send me free bras to apologize for this inconvenience, that would be fine too. As long as they have less than 4 hooks.