The Food chain and Symbiosis are a reality for me. I can see them happening. A wolf may eat a sheep and sheep may eat grass. To me these are as fit as each other. Grass - there is a whole lot of it to account for the sheep and there are more than enough sheep to keep the wolves happy and allow themselves to prosper too. Ok the concept of survival of the fittest is about comparing like for like. That if a baby bird is stronger than its siblings it will eat their share of the food and hence survive. How does this concept translate on to the food chain? Look at symbiosis. What complexity needs to be in place for mutual co-existence? Who out of the two were fittest? What was the mechanism of their living with one another?
Is survival of the fittest a rule or merely a trend in some frameworks and totally contradicted in other frameworks? Please tell me.