diff --git a/Serialization.md b/Serialization.md
index ca6aae8..44141de 100644
--- a/Serialization.md
+++ b/Serialization.md
@@ -39,6 +39,10 @@ We want a format which is:
 
 Package manifests in [Julia](https://pkgdocs.julialang.org/v1/toml-files/), [Python](https://packaging.python.org/en/latest/tutorials/packaging-projects/#configuring-metadata), and [Rust](https://doc.rust-lang.org/cargo/reference/manifest.html) are all written in TOML.
 
+## Serious candidates
+* TOML -- but we have cautions below that it looks good at first, then breaks down as you get more complicated
+* StrictYAML - it seems that with all its drawbacks, YAML is not a candidate. But StrictYAML is a subset that might be palatable; and perhaps Serde already produces StrictYAML or can easily be adapted to. Also, StrictYAML optionally uses a schema for reading, which might be sensible in our use case.
+
 ## Comparison
 
 ### Table