// Check user agent and session testing.
if (
		// We need to and this clause to force the user to 
		// go to the ELSE clause if this is False. That will
		// short-circuit this IF statement and skip the rest 
		// of the processing. We want to skip if: The session 
		// scope has been tested AND they have the session scope.
		(
			NOT (
				COOKIE.SessionScopeTested AND 
				COOKIE.HasSessionScope
			) 
		)
	AND
		// Assuming we make it this far, we are dealing either
		// with users who have not yet been tested or do NOT
		// have a session scope. Either way let's try to 
		// short-circuit this by testing for session.
		(
			// Check to see if we have tested this user to NOT
			// have a session scope available.
			(
				COOKIE.SessionScopeTested AND 
				(NOT COOKIE.HasSessionScope)
			) OR
			 
			// If we made it this far, then we have to fully 
			// test the user.
			(NOT Len(strTempUserAgent)) OR 
			 
			... MANY OTHER CHECKS ...
 
} else {
	 
	... LOGIC FOR SESSION-BASED USERS ...
 
}