<i>Each assembler&#x27;s personal speed level makes no difference. If furniture isn&#x27;t getting built fast enough, more assemblers are hired or existing assemblers work more hours.</i><p>Personal speed makes a lot of difference. For example, if the speed was zero, nothing would be built. It would cost your business more money if you have to pay people for more hours. So having male assemblers would cost more if they are worse at it.