https://docs.google.com/presentation/u/1/d/1fP5GKf01jwYnwkkgf1oGGM3nA4AH_gfZZt28DxgowTo/edit#slide=id.g7b6797262b_3_8 Refer to google slide
https://docs.google.com/presentation/u/1/d/1fP5GKf01jwYnwkkgf1oGGM3nA4AH_gfZZt28DxgowTo/edit#slide=id.g7b6797262b_3_8 Refer to google slide