Maybe anonymity would help? The problem there is that people won't have as much incentive to propose improvements, as they won't be recognized if their proposals end up being good.
It just has to be ingrained in the company culture I guess. You'd really need to emphasize, whenever possible, that improvements and suggestions and corrections are welcome. You're fighting against upbringing.
It just has to be ingrained in the company culture I guess. You'd really need to emphasize, whenever possible, that improvements and suggestions and corrections are welcome. You're fighting against upbringing.