36 WHAT IS LIFE 



The final question is: What, if any, experimental 

 proof of the theory is possible? 



If the theory is amenable to proof, that is, if it 

 admits of direct experimental test, the fate of the 

 theory always is determined by the outcome of the 

 test. If the result of the test is negative, the best 

 thing that can happen to the theory is speedy ob- 

 livion. If the result is positive, the theory ceases to 

 be mere theory, since proof changes theory into estab- 

 lished fact. 



