diff --git a/project.clj b/project.clj
index 8c1fe1c..c1a3dcf 100644
--- a/project.clj
+++ b/project.clj
@@ -3,7 +3,8 @@
   :url "http://example.com/FIXME"
   :license {:name "EPL-2.0 OR GPL-2.0-or-later WITH Classpath-exception-2.0"
             :url "https://www.eclipse.org/legal/epl-2.0/"}
-  :dependencies [[org.clojure/clojure "1.11.1"]]
+  :dependencies [[org.clojure/clojure "1.11.1"]
+                 [org.clojure/math.numeric-tower "0.0.5"]]
   :main ^:skip-aot nn.core
   :target-path "target/%s"
   :profiles {:uberjar {:aot :all
diff --git a/src/nn/core.clj b/src/nn/core.clj
index a0c5e1e..2ffe957 100644
--- a/src/nn/core.clj
+++ b/src/nn/core.clj
@@ -1,4 +1,4 @@
-;;TODO: actually interesting brains, refactor, better children handling
+;;TODO: actually interesting brains, refactor, better children handling, maybe dynamic variation on evolvers (based on score)
 
 (defmacro r
   []