Yeah I’m not sure either. It could be full random, as in a random number of areas and a random distribution of compounds. Would be interesting but meaningless. It could be driven by a climate model but it’s hard to get that level of resolution.
The problem with a purely associative system (fruit trees are near water but we don’t know where either is) is non-uniqueness, as above with the three colour diagram you drew.
@moopli have you got any thoughts? Would you be ok with “areas” or would you prefer a more abstract, associative approach or something completely different?