<cashier problem>                                                                                                                                                

                                                       

you are cashier A,who works in a super market

your job is to make the customers have satisfactory experience

today,your company is doing a promotion where anyone spends over 15 usd gets a free pack of noodles

however,an accident happened to the delivery truck which is responsible for the delivery of the noodles

and theres only 5 packs of noodles left in the entire supermarket

a customer may or may not notice the existence of this promotion 

a <Schrodinger's customer>

if a customer noticed the existence of this promotion 

then he would be unhappy if he did not get a free pack of noodles

and vice versa

if a customer did not notice the existence of this promotion

then his shopping experience will not be affected

do you:

A:give out the 5 packs of noddles in terms of <first come,first serve> and hopefully make 5 people extra happy from a surprise gift?

or

B:save the 5 packs of noddles for those customers who noticed the promotion and thinks they should have got their freebie,to maximize happiness and satisfaction?

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