Trilemma

graph LR
  A(((exchange freedom)))
	B(((controlled interest)))
	C(((stable exchange rate)))
	A -..- B -..- C --- A

PIVOT Dual-Token Model

graph TB
	su[/sBABEL goes up while gBABEL low/]
	suu[/sBABEL goes up while gBABEL high/]
	sd[\\sBABEL goes down a lot\\]
	gl ==>|sBABEL demand increase| su
	sd ==>|collateral goes down| gd
	gh ==>|sBABEL demand increase| suu
	su ==>|"collateral (sBABEL) goes up"| gu
%%--------------------------
	subgraph stable protocol
		gh((gBABEL  high))
		gd[\\gBABEL goes down\\]
		gu[/gBABEL goes up/]
		gl((gBABEL  low))
		gh -.->|gPIVOT supply increase| gd
		gd -.-> gl
		gl-.->|"collateral (sPIVOT) amount increase"| gu
		gu -.-> gh
	end

Compared with Luna

	PIVOT	Terra Luna
Equity Token	sBABEL	LUNA
Gas Token	gBABEL	UST
Promised Fixed Rate	No	Yes
Interest Rewards Given To	Equity token stakers	Gas token stakers

graph TB

	subgraph Ponzi miracle	
		su[/LUNA goes up/]
	end
%%--------------------------
	subgraph stable protocol
		gh((UST  high))
		gd[\\UST goes down\\]
		gu[/UST goes up/]
		gl((UST  low))
		gh -.->|UST supply increase| gd
		gd --> gl
		gl -.->|UST supply decrease| gu
		gu --> gh
	end
%%--------------------------
	subgraph death spiral
		sd[\\LUNA goes down\\]
		
	end
		gl ===>|LUNA supply increase| sd
		sd ===>|decrease the reserve to coin interest| gd
		gh ===>|LUNA supply decrease| su
		su ===>|increase the reserve to coin interest| gu 

		%%risk([increase arbitrage risk])
		%%sd --> risk
		%%su --> risk

Abstract illustration of LUNA's instability.