Work on the loop figure

diff --git a/tex/4-loop.tex b/tex/4-loop.tex
index 689cb6f828f0dc64072dcf6bb2db73733c4f1bae..f73dc5c2bdbe3360b2d3ee4e81877a49fd119f11 100644 (file)
--- a/tex/4-loop.tex
+++ b/tex/4-loop.tex
@@ -221,10 +221,13 @@ The point of this chapter is saying that previous chapters should be part of thi
   \tikzexternalenable
   \begin{tikzpicture}
     \small
-    \node[x=1mm, y=1mm, anchor=center, minimum width=84mm,minimum height=12mm, inner sep=0,fill=black!10, outer sep=0]() at (14,0) {};
-    \node[x=1mm, y=1mm, anchor=west, text width=1cm]() at (30,0) {\textbf{Physical World}};
-    \node[x=1mm, y=1mm, anchor=west, text width=1cm]() at (30,10) {\textbf{Mind}};
-    \node[x=1mm, y=1mm, anchor=west, text width=1cm]() at (30,-10) {\textbf{Computation}};
+    %\node[x=1mm, y=1mm, anchor=center, minimum width=84mm,minimum height=12mm, inner sep=0,fill=black!10, outer sep=0]() at (14,0) {};
+    \node[x=1mm, y=1mm, anchor=west, text width=1.2cm]() at (30,0) {\textbf{Physical World}};
+    \node[x=1mm, y=1mm, anchor=west, text width=1.2cm]() at (30,10) {\textbf{Mind}};
+    \node[x=1mm, y=1mm, anchor=west, text width=1.2cm]() at (30,-10) {\textbf{Computation}};
+
+    \fill[x=1mm, y=1mm, color=black!10] (0,0) -- (45:30) arc[start angle=45, end angle=-45, radius=30] -- cycle;
+    \fill[x=1mm, y=1mm, color=black!10] (0,0) -- (135:30) arc[start angle=135, end angle=225, radius=30] -- cycle;
 
     %\bigbottomarrow{cellblue}{12}{4}{180}{360}{30}{}{System}{white}
     %\bigbottomarrow{cellred}{12}{4}{0}{180}{30}{User}{}{white}