Could/might just as well…

Pro Tip 1/3

Alternative Suggestion

Use when proposing another option that seems just as acceptable or suitable.

You could just as well take the train if the buses are full.

Pro Tip 2/3

Pointless Effort

Expresses that an action has little or no value, so an alternative wouldn't make a difference.

We might just as well cancel the picnic if it's going to rain all day.

Pro Tip 3/3

Mild Criticism

Implies that a current effort is insufficient and something else could be equally ineffective.

He could just as well have stayed at home with that lack of enthusiasm.