Watching this on a rainy Saturday night, at first it easy to dismiss this episode.
Yes, the first three acts are the usual LIS goofiness.
However, the last act, where Dr. Smith is the adult, for once, makes it worth waiting for. Bill Mumy is excellent, as well. Even Angela Cartwright gets to shine.
There is also a possible real-world connection: This episode was completed about a month before Bill Mumy's 14th birthday.
He had been a child actor in numerous TV shows and movies, with a few of them quite memorable, even then. Now he is on the start towards becoming an adult.
So his talk of giving up fantasies may hit a little close to home.
Fortunately Bill made the transition to an adult actor, with writing and composing as well.
For the sci-fi fan, there is Babylon 5. He also got to reprise his famous TZ role, with his daughter, no less, and one of my favorites, an episode of the YA-oriented "Space Cases", with Mark Hamill.