You are right, they often have good reason, and can make the case by explaining that. Of course, they often to not have a good reason beyond spacing, it looks better, it is too crowded, or it is not crowded enough.
You are right, they often have good reason, and can make the case by explaining that. Of course, they often to not have a good reason beyond spacing, it looks better, it is too crowded, or it is not crowded enough.
But in our culture, especially in development culture, for some reason any decision based on a process in the right hemisphere is valued far less. We call it "subjective" even though it isn't. It's the same processes that every human brain does in much the same way. This is why optical illusions can work. They work much the same way for every person, and the reasons they work are not based on logic. They're based on physical, biological processes in our visual processing systems. It's not a "logical" or "rational" process. It's a visual process.
But if a designer says that spacing is going to cause a problem, it's not valuable input because there is no "logical" reason behind it. That's not logical!
As for the left/right thing, I know that- strictly speaking, there isn't really that much of a left-right separation of concerns in the brain. It doesn't matter for my point though. It's just a metaphor for the easily demonstrable fact that brains have functions other than logic that are just as useful and important to satisfy.