More likely you'd use the expensive scales to measure over/under fills (or tampering?) not just missing tubes.

If toothpaste was your primary cost (LOL, I'm sure its advertising, just like cars and videogames and movies) then if you sell 4 oz +/- 10% and the new scale lets you run continuously at exactly 3.61 oz rather than "around four or so" then you make almost 10% profit by selling exactly 3.61 oz as "about four plus or minus ten percent packages".

You can change it from a cheesy engineering / management joke into a CS discussion, so you're trying to copy one array into another, but sometimes you have an empty value and you want the output to be contiguous. Solutions?

Or a RTOS type question where you're wanting to squirt out exactly one value 44100 times per second... Solutions?