diff --git a/integrate/symplectic2.go b/integrate/symplectic2.go
index 388d101..8d5083d 100644
--- a/integrate/symplectic2.go
+++ b/integrate/symplectic2.go
@@ -129,9 +129,10 @@ func verletPrelude(name string, q0, p0 *core.Array) (q, p []float64, n int, err
 
 // integerState reports whether dt is one of the integer-class state
 // dtypes the symplectic family refuses: bool and the narrow integer
-// widths follow Int into the standing "int states cannot integrate"
-// refusal, exactly as the round's follow-Int rule requires. The float
-// dtypes, float16 included, keep the treatment they carry today.
+// widths carry a discrete state with no place in a continuous
+// integrator, so they follow Int into the standing "int states cannot
+// integrate" refusal. The float dtypes, float16 included, keep the
+// treatment they carry today.
 func integerState(dt core.Dtype) bool {
 	switch dt {
 	case core.Bool, core.Int, core.Int8, core.Uint8, core.Int16, core.Uint16, core.Int32, core.Uint32: