At one point Hale says that" women are used to worrying over trifles." Why is this ironic?

Hale casually makes this statement from which the play takes its title when Mrs. Peters calls attention to what she regards as the significance of the exploded jars of fruit preserves. In doing so, he gently chides the women for lacking the common sense and mental focus to pay attention to the important things, but he suggests that the men should forgive them for their foibles because they are only women and thus deal every day in small, unimportant details. Furthermore, his words imply that because women deal in trifles, women must also be trifles. However, his patronizing tone is undermined throughout the play as the women ultimately outwit the men and prove their worth, and not coincidentally does Glaspell have the women draw together after he utters this sentence. This is ironic because the men spend all their time looking for evidence because they have forgotten that evidence often consists of the little things - especially when no eyewitnesses are involved.