Hi All, I consider 4- eye check a NVA as it is redoing the same work or over processing. It's one of the kinds of waste and a good opportunity to work on and needs to be eliminated. We need to focus on how to make the upstream infrastructure more robust using the enhanced technology. There is no guarantee that the a 4-eye check is a foolproof step to follow. Our focus should be on upstream standardization, also use AI / ML where applicable and try to achieve DO IT RIGHT THE FIRST TIME model !!!