diff --git a/book/source/02-highlevel.md b/book/source/02-highlevel.md
index 6be9835..ae74fc0 100644
--- a/book/source/02-highlevel.md
+++ b/book/source/02-highlevel.md
@@ -113,10 +113,6 @@ For detailed information on structure and handling, read our chapters on OpenPGP
 
 Beyond the basics, managing certificates, as well as understanding their authentication and trust models, are crucial topics. Though this document will only briefly touch on these aspects, they constitute an integral part of working with OpenPGP.
 
-### Building blocks
-
-To perform these high-level operations, a set of [established cryptographic mechanisms](cyrptography_chapter) are used as building blocks, and combined into OpenPGP's format, which additionally deals with identities and their verification.
-
 ```{admonition} TODO
 Ch1 needs a "how to read this document" section and each of the Zoom-in sections needs its "you've landed here so let's explain this to you" line of some kind
 ```