True, is the correct answer.
In order to use the source you need to know the author and whether he/she has biases or may not be reliable.
Answer:
Kamen gives the opinion that his equipment was complicated. He supports this opinion with facts; for example, he says that people "had trouble wiring it" and that he "spent several days" fixing it.
Explanation:
This is just the example that ed uses, so I wouldn't suggest copying and pasting, but this should help. :)
I’m not sure but probably because we don’t use each other for commercial uses
