Instead of using sound science, explaining it, and sometimes extending it like in the other fourteen books, this one stoops to one of the oldest premises of B-movie sci-fi - and it isn't even scientifically sound.

Just because it's easy to shrink people on screen doesn't make it possible. Particularly the way it happens here - accidentally falling in the machine, getting dismantled, and waking up in a compressed duplicate (with the originals still in the machine) and then being able to reverse the process and coming out exactly the same size they were before! How did they even survive dismantling? Even if the process worked how were they able to walk?

The whole premise just shakes me up, even twenty years after first reading it. (Might be all those movies and Hanna-Barbera cartoons.) The only reason why I give this two stars is the familiar, endearing characters.

The "Choose Your Own Adventure" series was a great invention for kids, and the first 14 or so were very interesting. However, simply put, R.A. Montgomery is not very good at writing them, unlike his colleague Edward Packard. Arbitrary, preachy, and sometimes practically incoherent, his books are only for rabid fans of the genre.