A line has no depth or width only length as far as i can remember...we should not be even able to see it..so no perspective..
Just because you cannot see something from 'that' perspective ('your's'), does not mean that there is nothing to be seen from others. 'Your's' is just one perspective among many. The 'reality' that you perceive is only a tiny bit of the complete picture that you cannot possibly imagine. When you speak of perspective, you do not speak for a 'group', you speak for your own perceptions, no one elses.
It is a mind experiment.
Read the book, it's very short. very easy.
So, yes perspective.