People come to different decisions using cost-benefit analysis even under the same conditions
because costs and benefits are both what?
absolute
Outilities
subjective
nonmonetary

Subjective

Explanation:

Cost–benefit analysis is a systematic approach used to make a decision and determine it's cost, calculating the amount of benefit and check if the benefits  obtained will be more than the costs.

People come to different decisions using cost-benefit analysis even under the same conditions  because costs and benefits are both subjective.

well, i can't read it so i'll ask you questions about it : )

if you were a reader and you read the introduction, would you want to read more?

does it start with a question? if so, is it something you would want to read about?

and ask any friends or family for their opinion : )