In "Mending Wall," the speaker does not see the necessity of the wall. What does the speak do that could be considered ironic?

Helps to fix the wall
Points out there is no cows
Turns the work into a game
Argues against fixing the wall

Helps to fix the wall would be considered ironic, as the speaker questions the need for the wall in the first place. By actively participating in repairing it, they are contradicting their own doubts about its purpose.