Well, I had the interesting argument with an "editor" about whether there were two periods after the abbreviation "Inc." at the end of a paragraph., ie.  In September, the Company joined forces with Standard Electric Inc.   He insisted there was one period for "Inc" and one for the paragraph 
  
I also tried to convince him that "it's" was not possessive and that scientists don't "enthuse"... alas, to no avail.