There is no genuinely altruistic behavior.
Conclusion
There is no genuinely altruistic behavior.
Evidence
Behavior that appears to be altruistic can be understood as being motivated by the desire to reinforce the belief that we are useful and needed, a belief we need in order to maintain a minimum of self-esteem.
Evaluate
How can we accept the Evidence, but argue the Anti-Conclusion, that there is such a thing as genuinely altruistic behavior?
I guess we could say,
We wouldn't accept an argument like,
Sure you can understand it that way, but we still think sometimes cashiers be flirtin'.
Goal
Look for an answer saying something like,