Both Friction and Non-friction variety of literature are source of knowledge as well as entertaintment. I am not in support of the idea that people need to be restricted in terms of their choice of literary materials.
It can be accepted that books based on friction or imagination of the author may not have factual information. Frictional literature are only limited by creativity of its writers. At the same time they provide its readers with excitement that is impossible with historical records alone.
Authors produce books which are frictious and unexplained at present. Yet, In the long run they inspire people for greater achievements. For instance, the science friction novels of 18th century has encouraged invention of technology
and gadgets that are serving mankind today.
Human beings are not machines and are sensitive to art. Poems and novels are examples of art form. Even though, those literature being based on imaginary subjects are capable of stimulating people in numerous ways. A shoulder inspired by verse of an inspirational poem from its commander can win a battle with high morale.
In summary, readers shall not be prohibited to enjoy books based on its base on fact or friction. A reader will always be benefited by what he reads as long as he/she makes a sound choice of reading material. 
Both  
Friction
 and Non-friction variety of literature are source of knowledge  
as well
 as  
entertaintment
. I am not in support of the  
idea
 that  
people
 need to  
be restricted
 in terms of their choice of literary materials.
It can be  
accepted
 that books based on  
friction
 or imagination of the author may not have factual information. Frictional literature are  
only
 limited by creativity of its writers. At the same time they provide its readers with excitement  
that is
 impossible with historical records alone.
Authors produce books which are  
frictious
 and unexplained at present.  
Yet
, In the long run they inspire  
people
 for greater achievements.  
For instance
, the science  
friction
 novels of 18th century has encouraged invention of  
technology
 and
 gadgets that are serving mankind  
today
.
Human beings are not machines and are sensitive to art. Poems and novels are examples of art form.  
Even though
,  
those literature
  being based
 on imaginary subjects are capable of stimulating  
people
 in numerous ways. A shoulder inspired by verse of an inspirational poem from its commander can win a battle with high morale.
In summary, readers shall not  
be prohibited
 to enjoy books based on its base on fact or  
friction
. A reader will always  
be benefited
 by what he reads as long as he/she  
makes
 a sound choice of reading material.