diff --git a/docs/v4.0.0/STICK.md b/docs/v4.0.0/STICK.md
index 3df0f314..9bb53068 100644
--- a/docs/v4.0.0/STICK.md
+++ b/docs/v4.0.0/STICK.md
@@ -84,9 +84,11 @@ gains the partitions below). Three partitions:
   subsystem) runs unchanged on the partition device.
 - **Raw identity drives stay accepted:** a device with no valid GPT is read as today (the minted
   scratch pair in `disk/zuse-scratch/`, any v3 identity drive).
-- **Sizes (my call):** the image is a fixed size and does not grow to fill a bigger stick.
-  Partition sizes are set at build time: ESP 64 MiB, identity 64 MiB (today's identity drive
-  size), Artemis the rest of a 2 GiB image. Changeable in one place, `kernel/Makefile`.
+- **Sizes:** the image is a fixed size and does not grow to fill a bigger stick. Partition sizes are
+  set at build time, in one place, `kernel/Makefile`, and are not fixed by the formats: ESP 64 MiB,
+  identity 500 MiB to start (Captain Bob, 2026-10-26: "64 megabytes does not need to be an engraved
+  in stone size ... start maybe 500 megabytes"; the identity format records its own size,
+  `homeblocks_sig_t.metadata_devblocks`), Artemis the rest of a 2 GiB image (my call).
 - **The Artemis partition is formatted when the image is built (my call),** not on first boot:
   the image builder writes its `STFR` volume header and its `artemis_sig_t` genesis signature,
   so the kernel never meets a blank Artemis on a stick and never has to decide whether a disk may