In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

Silliness is when a person acts like a fool , or shows a lack of good sense or judgment .
Silliness is defined as engaging in " a ludicrous folly " , showing a " lack of good sense or judgment " , or " the condition of being frivolous , trivial , or superficial " .

Marginal utility is a concept from economics that describes the change in utility from consuming more or less of a good or service .
In economics , utility is the satisfaction or benefit derived by consuming a product ; thus the marginal utility of a goods or service is the change in the utility from an increase in the consumption of that good or service .

For example , a kilometre is one thousand times the length of a metre , but a square kilometre is one million times the area of a square metre .

For example , a kilometre is 10 ( a thousand ) times the length of a metre , but a square kilometre is 10 ( 10 , a million ) times the area of a square metre , and a cubic kilometre is 10 ( 10 , a billion ) cubic metres .

