In image formation, in order for you to have a clear image, the traveling rays passing through the transparent surface must traverse the same path lengths. Otherwise, interference will occur and your image won’t be as clear as it should be.
This can be applied in a person’s relationships with other people.
Yes, you may have the same goal (image) and different methods (rays), but if you don’t exert the same amount of effort in achieving your goal, things would end up being blurry.
Harmonize. Communicate. And you will be successful.

