Midway planning and Japanese target fixation

Why did Japan not try to take Green Island near Midway if it was large enough for an airfield?

Target fixation is the likely reason: imaginative planning existed, but senior leaders could lock onto Midway and ignore nearby alternatives.

The Japanese probably did not use Green Island because their planning culture could fixate on a chosen target. Creative junior-officer exercises coexisted with senior officers who had already decided how the operation should be won. This makes the Green Island question a problem of planning culture as well as geography.