Startup Idea : Give and Take

X will help Y. Both will decide the value of the help with mutual consent. Now, whenever X needs help, W, who is capable of providing help will help X for the same value. And then Y might help W again for the same value. Help need not be materialistic. It can be as simple as talking to someone when they're lonely. It can be a favour in some other form.This was just an example of 3. It can be extended to the entire world. In short people will help others in order to receive help in future from the same person or someone else for the same value.