diff --git a/Meaning-and-the-essence-of-stats.md b/Meaning-and-the-essence-of-stats.md
index 1b42160..90ba3be 100644
--- a/Meaning-and-the-essence-of-stats.md
+++ b/Meaning-and-the-essence-of-stats.md
@@ -59,17 +59,30 @@ That's a ratio of versus score to attack per minute.
 
 #### [DS/S] Downstack per Second
 
-That metric shows, how fast you clearing lines
+That metric shows, how fast you clearing garbage lines
 
 `DS/S = (VS / 100) - (APM / 60)`
 
 `DS/S = [ ( attack + garbage lines cleared ) / pieces ] * PPS - APS`, where APS is attack per second
 
-I found a dependence from VS/APM `1.667 VS/APM = 0 DS/S` 
+I found a dependence from VS/APM `5/3 VS/APM = 0 DS/S` 
 
 #### [DS/P] Downstack per Piece
+
+That metric shows, how efficiently you clearing garbage lines
+
+`DS/P = DS/S / PPS`
+
+`5/3 VS/APM = 0 DS/P` but dfhghjgfddfghj
+
 #### [APP + DS/P] Summary of Attack per Piece and Downstack per Piece
+
+It's literary what is called. Efficiency metric + Downstack metric = Ultimate efficiency metric (???)
+
 #### [Cheese] Cheese Index
+
+`Cheese = (DS/P * 150) + ((VS/APM - 2) * 50) + (0.6 - APP) * 125`
+
 #### [GbE] Garbage Efficiency
 #### [wAPP] Weighted Attack per Piece
 #### [Area] Area