diff --git a/Python3.md b/Python3.md
index 571a800..d871e62 100644
--- a/Python3.md
+++ b/Python3.md
@@ -23,8 +23,8 @@ We use [tox](https://tox.readthedocs.io/en/latest/) to standardize environments
 Some things you can take on:
 
 * `allmydata.node` is pretty standalone.
-* Start the more complex process (see below re spaghetti dependencies) on `allmydata.immutable`.
-* Some other standalone module if you can find one.
+* Start the more complex process (see below re spaghetti dependencies) on `allmydata.mutable`. That is, pick a test module, and port just the test module, but making necessary changes elsewhere to make the tests pass. Repeat until all tests modules for `allmydata.immutable` are ported.
+
 
 ## The porting process, big picture