I was more looking at it that ideology is molded by people and people are molded by ideology. symbiosis is probably the wrong word, but it's the best word I can think of (synergy maybe? no, that sounds worse...)

The analogy that's been running through my head is tea and coffee. In both cases, you steep water (the people) with ground plant material (ideology, values, culture, what have you). They're made the same way, but if you can't tell the difference, I'm not coming over to your house for dinner, lmao.

if you mix a small amount of one into the other, the whole isn't drastically changed, though there may be a subtle difference in flavor, color, aroma, etc, but the fundamental whole is maintained.

the more you add of one to the other, though, the more drastic the change becomes, until you're left with something unrecognizable as what you started with. if you continue pouring long enough, the original drink becomes unrecognizable to what it once was, diluted in what was added to it.