[erg0s4m]

So it has negative weight in this case.

[TheOtherHobbes]

Negative mass = negative energy, so we should be able to make an Alcubierre Drive out of punched cards.

[tavavex]

If some PMs today evaluate performance by the number of lines of code, I wonder if the punch card equivalent was weighing the punched-out holes that were removed by each developer.