tilts_at_infinity_review.md

@@ -20,6 +20,10 @@ Using the script given below, we find differences of at most `2e-7 rad` in the t
 
 ### Example output
 
+### Comments
+
+The previous `--evolve_spins` command-line option for evolving the spins forward to the ISCO frequency for remnant fits evaluation has been deprecated and replaced by `--evolve_spins_forward`, for symmetry with the `--evolve_spins_backward` option for the tilts at infinity. There is a message letting the user know about the deprecation of `--evolve_spins` if they use it and what they should use instead.
+
 ### Signoff
 
 ### Comparison script