The milkman's whistling faded into the distance.
They bring them wines of Greece and Araby,[] And daintie spices fetcht from furthest Ynd,[] To kindle heat of corage privily: And in the wine a solemne oth they bynd 35 T' observe the sacred lawes of armes, that are assynd.
This definition [of tool] is not simple, but contains several elements. The tool must not be part of the animal's body (a beak is not a tool); the user must manipulate the tool in some way for it to realise its function; and, finally, a tool cannot be attached to the substrate. This is a fairly clear definition, but does seem to produce some rather arbitrary distinctions (Hansell 1987b). The spider Dinopis, for example, makes a small web which it holds in its legs, thrusting it down on passing ants. This is a tool, but all other webs, however complex, are not since they are anchored to the substrate. The woodpecker finch […] that uses a fine stick held in the beak to extract insect prey from wood, is a tool user, but a shrike […] that impales an insect on a thorn still attached to the bush is not.
tool
For example, I did not follow a Ximenean rule that a member of a larger class cannot be used to define the class itself (one poster brought this up).
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