Paul Sorvino and Michael Dorn work well together as foster brothers in this throwback episode that, much like "Pen Pals" and "Who Watches the Watchers" from earlier seasons, builds its drama out of the noninterference principal of the Prime Directive.
The story uses a clever plot device (which, in fact, is reused in TNG's third feature film, Insurrection) and marries it with the recycled idea of a malfunctioning holodeck... with mixed results. The languid pacing does the episode no favor, nor does its use of the Prime Directive, which comes across here as cold-hearted and abstractly enforced. The end result is an uneventful road trip with a tone poem tucked inside. (Or you can call it a battle of wills between bickering brothers if you want to be less poetic and more alliterative.)