I'm more in favor of a meritocracy, skinn collor doesn't really matter at all to the plants, even to eggplants or cantelopes
it has nothing at all to do with regeneration of the land, it really doesn't.
Intelligent people of any race will and do learn from other intelligent people regardless the collor of their skinn. I'm more or less white and I wouldn't care the less if my teahcer is black (or whatever other collor), if he is a good teacher I would be happy to learn from him, and I'm sure is the same the other way around