E = Mc^2 Talks with the Law of Mass Doing Work: This Great Equation Wants to Know Why Mass Has Energy; Do You?

"Hi, dear E = mc^2, what are you doing? It seems that you are deeply meditating on something," a physicist saluted and chatted with the famous and great equation. "I have been pondering over the fundamental question, why does mass have energy? In fact, this thorny question has been constantly baffling me for quite a long time. Moreover, I have been asked this question many, many times over the entire last century," this great equation replied candidly and specifically. "Have you ever heard of the law of mass doing work?" the physicist suggested. "I haven't yet; what's this law about?" this great equation replied honestly and asked curiously. "It's a newly discovered and verified physical law. This law answers the question of why mass has energy by revealing and showing that mass has the capability of doing work," the physicist replied concisely. "Oh, mass has the capability of doing work! Really?" this great equation became obviously astonished. "Yes, really, because this law also shows that the mc^2 in you is equal to the maximum capability of m doing work," the physicist answered calmly and assuredly. "And so, I want to know the law of mass doing work. And I'm going to talk with this law," this great equation reacted excitedly and eagerly.