Professor: Economists argue that buying lottery tickets is an unwise use of resources, because the average payoff for the tickets sold in a lottery is much lower than the cost of a ticket.
Conclusion
It's faulty to reason that lotto tickets are a poor use of money, just because the average payout for a ticket in a lottery is much lower than the cost of a ticket.
Evidence
Nobody would say that individual insurance policies are a poor use of money, and they also have an average payout that's less than the amount paid by the policy.
Evaluate
The easy part of this argument is that it's making a Comparison between lotto tickets and insurance policies, so if we're going to Weaken this Comparison, we're probably going to want an answer that points out an important difference between the two things.
The hard part of this argument is understanding the whole "average payout" concept.
We can remind ourselves that running a lotto and running an insurance company are both profitable ventures. They take in more money than they give out.
Lotto's might collect 10 million in revenue and then pay out 1 million as the grand prize.
Insurance companies might collect 10 million in premiums and then pay out 1 million to people who file claims when their property is damaged.
Since the average payout of the lotto or an insurance policy would be calculated by thinking of how much money is paid in vs. how much money ever goes back to the customers, any profitable lotto or insurance company will have a smaller amount going back to customers than is being taken in.
Put another way, it might cost $5 to buy a lotto card, but the average return on buying one is $2.
An insurance policy might cost $500 and the average payout to policy holders is $75.
Goal
In both cases, we know that we're putting money into a system that in the long run is meant to collect more money than will be distributed. (gamblers in Vegas know that "the House always wins", meaning, in the long run the casinos must take in more money than they give away)
So how can we fight this conclusion and argue that