□ □
[□] □
□+ □
Aristotle 's observations were limited , however ; he dissected plants and animals , but never examined a human body . We next examine a problem of minimizing the cost of acquiring and utilizing machines designed to cool large facilities or buildings , subject to minimum operational requirements . Although most of the Harvard Project ’ s studies only examine a handful of tribes , its findings fit with the anecdotal experience of tribal professionals . Anthropological concepts will enable the student ethnographer to critically examine a topic they personally find interesting .