=====Statement attributed to Will in the text===== 
 I the article we currently have: 

 On the other hand, some authors such as Clifford Will (1992) claimed that this problem doesn't affect measurements of the isotropy of the one-way speed of light, for instance, direction dependent changes due to relative motion of a "preferred" (aether) frame Σ. Using such a preferred frame test theory, Will argued that it is impossible to measure the one-way speed between two clocks using a time-of-flight method without synchronization scheme, but by referring to experiments in which light follows a unidirectional path he argued 

 "...a test of the isotropy of the speed between the same two clocks as the orientation of the propagation path varies relative to Σ should not depend on how they were synchronized...".[9] '' 

 This statement was shown to be incorrect by Zhang in 1997.  It is not clear from Will's later publications that he still supports the he view stated in 1992.  I therefore think this section is too strongly worded.  Can we look at changing it please.