In the last two lines of the poem, the family does nothing after the boy's death. They do not grieve and simply “go about their business.” A little understated, but easy to understand why. To readers, he seems incredulous because we imagine the mother and sister bursting into violent sobs and begging for the boy to come back to life. We also imagine that the father blames himself for allowing his son to handle such a dangerous instrument at that age. But if we think about it, all these things don't make sense. There is nothing the family could have done to save their boy. Therefore, Frost is straightforward with the fact that the family promptly moves