Author :
Joe Tsai
Date :
2015-10-29 09:44:23
Hash :ff3897df Message :Clarify Section 8.
* The phrase "difference between these distances" can either refer to
the conceptual difference (i.e. they hae different semantic meaning)
or to the mathematical difference (i.e. use substraction for the two).
Instead, just remove the sentence since the equations below make it
clear what we're supposed to do here.