title="Small wooden toy." tag="{http://www.w3.org/1999/xhtml}img"/>

This working hypothesis for the selection of toys is as yet but little understood either by those who buy or those who sell play materials. The commercial dealer declares with truth that there is too little demand to justify placing such a series on the market. Not only does he refuse to make "Do-withs" but he provides no adequate substitutes. His wooden toys are merely wooden ornaments without relation to any series and without playability, immobile, reasonless, for the philosophy of the play laboratory is quite unknown to the makers of play materials, while those who buy are guided almost entirely by convention and have no better standard by which to estimate what constitutes their money's worth.