Changed the wording slightly

text/source/behavior/discrete/decay.rst

@@ -273,10 +273,10 @@ Without event detection, the integrator will simply step right over
 events.  When this happens, the integrator will miss important changes
 in behavior and this will have a significant impact on the accuracy of
 the simulation.  This is because the accuracy of most integration
-routines is based on continuity assumptions of the underlying
-function and its derivatives.  If those assumptions are violated, we
-need to let the integration routines know so they can account these
-changes in behavior.
+routines is based on assumptions about the continuity of the
+underlying function and its derivatives.  If those assumptions are
+violated, we need to let the integration routines know so they can
+account these changes in behavior.
 
 This is where events come in.  They force the integration to stop at
 the point where a behavior change occurs and then restart again after