HANNA: DESIGN OF TRANSMISSION LOSS EXPERIMENTS 



Dr. Hanna: I have two things I want to say. 



First, the main point that I was really trying to develop through- 

 out this whole discussion — not focusing on this specific example of 

 a kind of transmission loss measurement — is that when you make a 

 measurement of transmission loss and come back with a set of numbers, 

 in the processing of those data you need to think consciously about 

 what it is you believe you are measuring. 



I can show examples where that kind of consideration has not 

 been given to the processing of the data, and the inferences drawn 

 from those data are, in fact, quite misleading. That is really the 

 essence of the point that I want to make. It certainly is not pro- 

 found to ask anybody who is doing something to think about what it 

 is they are doing. 



Second, at this particular point, I am reminded of a story which 

 I think summarizes how I feel. 



The way the story goes, a chicken and pig were riding in the 

 back of a farmer's truck. The truck was being driven through town. 

 The farmer hit a pothole in the road and the chicken and the pig 

 bounded out into the street. The truck went on, leaving them to 

 their own devices. 



The chicken and the pig were strolling down the street at that 

 point and they passed a restaurant with the menu in the window: the 

 menu said, "Ham and eggs, $1.50." 



The chicken looked at the sign, swelled up a bit with pride and 

 said to the pig, "Isn't it marvelous the contribution we make to 

 mankind." The pig looked at the chicken and said, "For you a 

 contribution, for me a personal sacrifice." 



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