foo: (OPEN (DEST (ACTIVE 2))) (ALU (OPEN 0) <- (ACTIVE 0)) (ALU (OPEN 1) <- (ACTIVE 1)) (CALL USER-PLUS) user-plus: (ALU (FUNC RETURN) <- (ACTIVE 0) ADD-24 (ACTIVE 1) CHECK-BOTH-FIXNUMS TRAP-IF-OVERFLOW) (RETURN) Lambda: 98 instructions * 200 ns = 19,600 ns K: 6 instructions * 75 ns = 450 ns Speed ratio: 19,600 / 450 = 43.5