Robert Hivnor’s Too Many Thumbs is a delightful fantasy built about a significant idea. The satire is good-natured, the wit impish and meaningful. Satire and wit strike in many directions, and the reader can interpret according to his lights. Hivnor has something up his sleeve till the final curtain, and the circles of thought go on widening for days. This is the kind of play that makes you ask for more of the same.