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On the issue of whether language is best seen as having evolved as an adaptation or as a spandrel , evolutionary biologist W. Tecumseh Fitch , following Stephen J. Gould , argues that it is unwarranted to assume that every aspect of language is an adaptation , or that language as a whole is an adaptation .
 W. Tecumseh Fitch, Stephen J. Gould
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 W. Tecumseh Fitch, Stephen J. Gould