True, OLFSLF, but not doing to checks didn't cause the accident, the gust lock being place did. It's a fine line, but the design caused the accident, the pilots contributed by their negligence and could have averted the outcome by performing the checks.
We're going to disagree on that. IMO, the pilots negligence directly caused the accident. They didn't perform the standard checklist prior to takeoff. If they had, the accident never would have happened.