[12423gsd]

Unfortunately our perceptions can't be boiled down to chemicals in the brain. You can be depressed and have normal chemical levels. Just because increasing some chemical will make you happier, doesn't necessarily mean that's the only way.

Until we're able to analytically evaluate perception (which we are no where close to understanding), what you're describing isn't possible

[elwell]

> You can be depressed and have normal chemical levels

Maybe if you only consider the chemicals that are normally considered.

[hvidgaard]

There is no reason that chemicals are the only actively defining part of our mind. It may very well be that chemicals are everything we need to messure, it may also turn out that we need to messure a lot of other things. Point is we do not know, and have a growing problem to figure it out.