diff --git a/Cargo.toml b/Cargo.toml
index 2c1f4e1..b70ffbe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,5 +8,7 @@ edition = "2021"
 [dependencies]
 clap = { version = "4.4.8", features = ["derive"]}
 derive_builder = "0.12.0"
+rand = "0.8.5"
+rand_distr = "0.4.3"
 serde = { version = "1.0.192", features = ["derive"]}
 toml = "0.8.8"
diff --git a/Makefile b/Makefile
index 99401c9..e7d47c8 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ check:
 	cargo check
 
 run:
-	cargo run -- params.toml 2>/dev/null | python3 scripts/format.py
+	@cargo run -- params.toml 2>/dev/null | python3 scripts/format.py
 
 debug:
 	cargo run -- params.toml
diff --git a/params.toml b/params.toml
index f360d24..4488db3 100644
--- a/params.toml
+++ b/params.toml
@@ -91,3 +91,7 @@
     [types.gen_tuple]
         gen_each_field = 0.5
         get_instant = 0.5
+
+[dev]
+    float_gen_distro_pos_stddiv = 56713724e30  # DO NOT expand with zeros
+    float_gen_distro_neg_stddiv = 56713724e30
diff --git a/src/params.rs b/src/params.rs
index c4c62e8..271b410 100644
--- a/src/params.rs
+++ b/src/params.rs
@@ -18,6 +18,7 @@ toml_struct!{
         global_flow: GlobalFlow,
         statements: Statments,
         types: Types,
+        dev: Dev,
     }
 }
 
@@ -149,6 +150,13 @@ toml_struct!{
     }
 }
 
+toml_struct!{
+    struct Dev {
+        float_gen_distro_pos_stddiv: f32,
+        float_gen_distro_neg_stddiv: f32,
+    }
+}
+
 impl Params {
     pub fn parse(p: &PathBuf) -> Self {
         let file_string = fs::read_to_string(p)