diff --git a/src/foreword/implementation.tex b/src/foreword/implementation.tex
index dd5ff87..25facb5 100644
--- a/src/foreword/implementation.tex
+++ b/src/foreword/implementation.tex
@@ -145,5 +145,6 @@ Its objectives are:
 
 In our work, many tasks will consist in 3D content analysis, reorganising and 3D rendering evaluation.
 Many of these tasks require long computations, lasting from hours to entire days.
-To perform them, we need a programming language that has best performances (Rust has comparable performance with C or C++) and the extra features that Rust provides ease development tremendously, and this is why we use Rust for all tasks that do not require having a web interface.
+To perform them, we need a programming language that has good performances (Rust has comparable performance with C or C++).
+In addition, the extra features that Rust provides ease tremendously development, and this is why we use Rust for all tasks that do not require having a web interface.