This game meets my criteria for five stars:
Polish: I found no bugs, and everything ran smoothly. The game logic was sound.
Descriptiveness: I learned new things. I was intrigued by the game in ways that bled into real life.
Interactivity: This game explores parser space in a way that (Spoiler - click to show)Take, The North-North Passage, and Lime Ergot did. These games take the player-parser interaction and do 'variations on a theme' like composers.
Emotion: I felt a warm glow.
Play again: Sure!
Sobol's been reviewing games for at least 5 years, it's high time he post one of his own. This is a lovely game.