All we have been interested in solve world problems but we have different thoughts about solutions. Some of us think that all we are responsible for creating a better world and the others wait for some supermen for that job. It is possible to ask why billionaires don’t use their money to solve world problems. Theresa Searcaigh, an Irish-American author of literary fantasy genre novels, asked this question. A Tumbler user explained how capitalism works as a good response to Theresa’s question.