Even fancy sandwich shops can’t afford to have their trays discarded. Preventing customers from making a mistake, in this case, means making the trash can opening smaller than the tray.
![](https://mistakeproofing.com/wp-content/uploads/2024/03/image-57.png)
Even fancy sandwich shops can’t afford to have their trays discarded. Preventing customers from making a mistake, in this case, means making the trash can opening smaller than the tray.
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