For myself, there are many people who can have knowledge in something that isn't spoken. Math is a language that you can't completely express in spoken words, visual art is a form of communication, and people who have knowledge of how to track people through the woods have a knowledge that they didn't learn completely from someone telling them. It was primarily from trial and error, seeing something, reasoning it out. Language does not lead to knowledge, it just is the most outwardly showing form of knowledge. Challenge this if you want, but someone who speaks in lectures of quantum physics is going to be thought by many people to have a large amount of knowledge but an artist who paints in a certain style and maybe spent years perfecting it isn't going to be seen to have knowledge in the same way because what they do they can't truly be expressed in words but in their art. They are seen as artistic not knowledgeable. They still have knowledge.
As for perspective and reasoning. I argue that a persons perspective warps or changes their reasoning. Someone who supports the Liberal party will have different reasoning as to where money should be spent by the government than someone who supports the Green Party. Certain reasoning may be the same for some people but their perspective is different. People who come from different cultures are influenced to consider certain areas of life more important than others and this alters their reasoning. So I don't believe reasoning and perspective are completely separate. Also I think Language alters a persons perspective. An example of this is the case study we listened to of the people in South America who only have vague numbers in their language for one and two. To them numbers aren't important, their perspective on things like economics aren't going to be the same as someone who from kindergarten has learned that 1 comes before 2 and 3 comes before 4 and 5. Their perspective is different because of their language and their reasoning will be different because of their perspective.
