A point of view is similar to perspective. The person who has the view will think of something in a certain way dependent on their own interests and beliefs. As you know, looking at something from the right hand side can be different to the left hand side, and this concept is used in how and what you think about something. If several people have a different point of view from each other, then we use "points of view". Points is plural because it involves different opinions from different positions, but each has one view (the process is named a view). View remains singular. Another word that is sometimes used is viewpoints. You can also say "we are reviewing the various views people have", when the word view interchanges with the word opinion. Now we are emphasising the different views, rather than the different points. Saying view is like an abbreviation for point of view. Point of views is not correct when talking about opinions, because it suggests a person that is looking in different directions from the same place. You can do this if you are at an observatory for example. Views in this case is looking at something else, so you are no longer comparing one person's opinion of something to another person's opinion of the same thing. Hope this helps. Adam