A

You: "How did you conclude that happiness is acheiveable"

Him: "I think that from some aspect, it's *not* possible to acheive happiness, because in the game of life, anything has advantages and disadvantages. But for some other aspect, There's an option that there are and there aren't advantages and disadvantages at the same time. Althought it's of course impossible to see in the normal human mind, if one can contain this option, which includes the previous aspect in it, it's impossible to be unhappy unless you choose it"

What to answer?

a."Why does the option you mentioned contains the previous aspect in it?"

b. "What makes you think it's possible to think of two opposites as the same thing?"

c. "Why does the option you mentioned makes it impossible to be sad unless you choose it?"

d. What excatly is "the game of life?"