1. A solution towards removing the position encoding is not discussed. 2. Importance of quantifying the strength of PPP is not clear to me. 3. Authors state that reliable PPP metrics are important for understanding PPP effects in different tasks. While this point is surely intriguing, such an explanation or understanding is not explicitly given in the article. Can the authors explicitly explain what type of understanding one reaches by looking at the PPP maps? 4. The conclusion of the article remains a bit vague. While the proposed metrics have some more desirable attributes, value of these attributes for applications is unclear to me. How will this actually improve the practice or our understanding?
3. Authors state that reliable PPP metrics are important for understanding PPP effects in different tasks. While this point is surely intriguing, such an explanation or understanding is not explicitly given in the article. Can the authors explicitly explain what type of understanding one reaches by looking at the PPP maps?