Update

kiss.md

@@ -24,6 +24,7 @@ Apparently the term *KISS* originated in the US Army plane engineering: the plan
 - Using [ASCII art](ascii_art.md) instead of bitmap images.
 - [Beatboxing](beatbox.md) to produce a back track for rap songs, as opposed to using (or even paying for) some kind of music software.
 - Using hammock instead of bed -- it is much simpler, cheaper, portable and has an extra swinging feature for which it is considered by many to even be superior in terms of comfort.
+- The [Elo](elo.md) rating system is considered KISS in the context of other rating systems such as [Glicko](glicko.md). While there are many systems objectively more accurate than Elo, Elo remains the most widely used one probably thanks to its simplicity.
 - In the world of [coffee](coffee.md) so called *Turkish coffee* without any milk and sugar is probably the most KISS option, you just put coffee ground in a mug and pour hot water on it. Compare this to Espresso with milk and sugar which needs a quite complex and expensive machine. { Yeah, I drink the most KISS coffee, though sometimes I also use French press -- that one is still quite simple. ~drummyfish }
 - ...
 
@@ -38,4 +39,5 @@ Compared to [suckless](suckless.md), [Unix philosophy](unix_philosophy.md) and [
 - [KILL](kill.md)
 - [primitivism](primitivism.md)
 - [LRS](lrs.md)
-- [KISP](kisp.md)
+- [KISP](kisp.md)
+- [frugality](frugality.md)