[quote=caliban22]
So lets say human slavery and human appeasement do the same. Does one make A human revolt more or less likely? Or just they do What they Are told but dont like you? Sorry i ask So many questions
[/quote]

That's fine

A player that wants to make the most of their natives would choose both of those techs. However, doing so would take a while. On the final tech trees, there will be arrows leading on from one tech to another. Next to those arrows will be the number of seasons required to research them. 

Basically, unless the Gorikans choose to annihilate the human population that they occupy (which is an option, one with draw backs), then there will be humans living with you as well. One path lets you lead them through fear, the other with compassion. Both have their merits, and combined, would be formidable.