diff --git a/introduction.tex b/introduction.tex
index 0eb855e..5830e64 100644
--- a/introduction.tex
+++ b/introduction.tex
@@ -240,6 +240,21 @@ The method call \texttt{shuffle(l)} is not correct, because there is no solution
 
 $\exptype{List}{\wctype{\rwildcard{X}}{List}{\rwildcard{X}}} \lessdotCC \exptype{List}{\exptype{List}{\wtv{x}}}$
 
+\section{Type Inference for Capture Conversion}
+why do we need a lessdotCC constraint
+
+input is e.m(e);
+Recap: TI for FGJ without Wildcards
+- usually the type of e must be subtypes of the method parameters
+- in case of a polymorphic method: type placeholders resemble type parameters
+
+involving wildcards:
+- depending on the type of e a capture conversion must be applied first
+- the captured type N must be a subtype of the method parameters
+- type parameters: can be set to free variables!
+    - but must afterwards be closed again
+    - the free variables can only be used inside the let statement
+- we align the let statements in a way thate mimics Java capture conversion:
 
 
 % $\exptype{List}{String} <: \wctype{\wildcard{X}{\bot}{\type{Object}}}{List}{\rwildcard{X}}$