diff --git a/README.md b/README.md
index 64e20cfd..960eaf2a 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ The name of this repository is a pun on two meanings of "time to": "how much tim
 | Nim                         | 40.8ms    | 84   |
 | Lua (LuaJIT)                | 69.9ms    | 82   |
 | OCaml (flambda)             | 187.9ms   | 123  |
-| Squiggle (bun)              | 0.538s    | 14*  |
+| Squiggle (bun)              | 0.387s    | 14*  |
 | Javascript (node)           | 0.445s    | 69   |
 | SquigglePy (v0.27)          | 1.507s    | 18*  |
 | R (3.6.1)                   | 4.508s    | 49   |
diff --git a/squiggle.c/makefile b/squiggle.c/makefile
index b1fdbf33..8a05d723 100644
--- a/squiggle.c/makefile
+++ b/squiggle.c/makefile
@@ -1,5 +1,8 @@
 OUTPUT=./samples
 
+build:
+	gcc -O3 samples.c ./squiggle_c/squiggle.c  ./squiggle_c/squiggle_more.c -lm -fopenmp -o $(OUTPUT)
+
 install:
 	rm -r squiggle_c
 	git clone https://git.nunosempere.com/personal/squiggle.c
@@ -8,9 +11,6 @@ install:
 	cp -r squiggle_c/examples/more/12_time_to_botec_parallel/example.c samples.c
 	sed -i 's|../../..|squiggle_c|' samples.c
 
-build:
-	gcc -O3 samples.c ./squiggle_c/squiggle.c  ./squiggle_c/squiggle_more.c -lm -fopenmp -o $(OUTPUT)
-
 time-linux: 
 	@echo "Running 100x and taking avg time: OMP_NUM_THREADS=16 $(OUTPUT)"
 	@t=$$(/usr/bin/time -f "%e" -p bash -c 'for i in {1..100}; do OMP_NUM_THREADS=16 $(OUTPUT); done' 2>&1 >/dev/null | grep real | awk '{print $$2}' ); echo "scale=2; 1000 * $$t / 100" | bc | sed "s|^|Time using 16 threads: |" | sed 's|$$|ms|' && echo
diff --git a/squiggle.c/squiggle_c/README.md b/squiggle.c/squiggle_c/README.md
index 09489b2a..09153259 100644
--- a/squiggle.c/squiggle_c/README.md
+++ b/squiggle.c/squiggle_c/README.md
@@ -248,18 +248,18 @@ make tidy
 
 It emits one warning about something I already took care of, so by default I've suppressed it. I think this is good news in terms of making me more confident that this simple library is correct :).
 
-### Division between core functions and extraneous expansions
+### Division between core functions and squiggle_moreneous expansions
 
-This library differentiates between core functions, which are pretty tightly scoped, and expansions and convenience functions, which are more meandering. Expansions are in `extra.c` and `extra.h`. To use them, take care to link them:
+This library differentiates between core functions, which are pretty tightly scoped, and expansions and convenience functions, which are more meandering. Expansions are in `squiggle_more.c` and `squiggle_more.h`. To use them, take care to link them:
 
 ```
 // In your C source file
-#include "extra.h"
+#include "squiggle_more.h"
 ```
 
 ```
 # When compiling:
-gcc -std=c99 -Wall -O3 example.c squiggle.c extra.c -lm -o ./example
+gcc -std=c99 -Wall -O3 example.c squiggle.c squiggle_more.c -lm -o ./example
 
 ```
 
@@ -290,6 +290,13 @@ Behaviour on error can be toggled by the `EXIT_ON_ERROR` variable. This library
 
 Overall, I'd describe the error handling capabilities of this library as pretty rudimentary. For example, this program might fail in surprising ways if you ask for a lognormal with negative standard deviation, because I haven't added error checking for that case yet.
 
+## Extra: confidence intervals
+
+// to do
+
+## Extra paralellism
+
+// to do
 
 ## Related projects