**
Abstract ( 13.0: Fisher statistic (II) )
**

Abstract: Measurement theory (= quantum language ) is formulated as follows. \[ \underset{\mbox{ (=quantum language)}}{\fbox{pure measurement theory (A)}} := \underbrace{ \underset{\mbox{ (\(\S\)2.7)}}{ \overset{ [\mbox{ (pure) Axiom 1}] }{\fbox{pure measurement}} } + \underset{\mbox{ ( \(\S \)10.3)}}{ \overset{ [{\mbox{ Axiom 2}}] }{\fbox{Causality}} } }_{\mbox{ a kind of incantation (a priori judgment)}} + \underbrace{ \underset{\mbox{ (\(\S\)3.1) }} { \overset{ {}}{\fbox{Linguistic interpretation}} } }_{\mbox{ the manual on how to use spells}} \] In Chapter 5 (Fisher statistics (I)), we discuss "inference" in the relation of "measurement". In this chapter,

**we discuss "inference" in the relation of "measurement" and "causality".**

$(\sharp):$ | S. Ishikawa, Mathematical Foundations of Measurement Theory, Keio University Press Inc. 2006. |

**Again recall that, as mentioned in $\S$1.1, the main purpose of this book is to assert the following figure 1.1:**

**Fig.1.1: the location of "quantum language" in the world-views**