private static function uncertain() {
	ini_set('display_startup_errors', 0);
	ini_set('display_errors', 0);
	error_reporting(0);
	if (\alsvanzelf\fem\ENVIRONMENT == 'development') {
		ini_set('display_startup_errors', 1);
		ini_set('display_errors', 1);
		error_reporting(-1);
	}
	
	$error_handler = function($level, $message, $file, $line, $context) {
		throw new \ErrorException($message, $code=0, $level, $file, $line);
	};
	set_error_handler($error_handler);
}