What does it mean that the symbol for carbon is Co, the symbol for double carbon is Co2, and the symbol for triple carbon is Co3? Would we upset calcium if we said its symbol was not CA? Would iron be angry if we said that its symbol is Ca and the symbol for calcium is Fe? Will the lineages get mixed up, and will Mendel have to be resurrected? I don't know! Do you know?! The important thing is that I memorized entire mathematics problems, and put them as they were in my memory in the answer booklet! This mathematics is also a problem. I am still searching for the secret of my grandfather's constant crying, in joy and sadness, and you are telling me to suppose. Suppose that x + y = z If we are not yet able to explain the proven reality, then why do you ask me to prove what happened in the imagination?! Do you ask me to be happy when I write "H.Th.Th" after proving what happened in my imagination, and you do not see my confusion and anxiety when I am unable to write "H.Th.Th" in the face of what happened in reality?!