"Less" OR "Fewer"

It seems that most people do not know how to use "less" or "fewer" correctly in writing. Many do not realize that there is a difference in the two. The authorities that I found in my research all agree in the manner in which you would use "less"  or "fewer." 

• The English Oxford Living Dictionary:  Less would be used when something cannot be counted or referring to people or things that are not plural.  Less is also used with numbers when they are on their own.  Fewer would be correct when referring to people or things in a plural form or to emphasize how small the number of people or things is.

• Grammar.com: There is a key difference between the two words: The word "less" modifies singular nouns, while "fewer" modifies plural nouns. Less would be used when something is not easily counted.   

• Writer's Digest:  Less is usually applied when speaking about bulk or quantity. Fewer is applied when emphasizing a number of persons or items, and when modifying plural nouns. 

As I was reading the different information from the above authorities, it appears that they are all in agreement when and how to use the words, "less" and "fewer." It is very easy to confuse the two if you are not paying attention to the sentence and how it is written.  The fact is that both words can be used to specify or describe quantity but they have their own specific use in a sentence.