Decade old machines running some ancient version of windows embedded that needs to measure the precise weights of tens of thousands of products from hundreds of manufacturers who have no standardization or line of communication with the software developers while constantly changing the weight of the products which then also have individual variance for each item, plus the kinks of each individual machine's sensors and the variance of the customers leaning things against walls, adding bags, kids touching scales etc. The clerk's job is ofc to be an outlet for customer's rage to insulate the management which means that the people with all the experience of the machine's problems have by their job's very nature no line of communication to send feedback to the developers or technicians if there even is any technicians working on these things after the point of installation.