Advertisement: When you need a will, consulting a lawyer is much more expensive than using do-it-yourself software. And you get a valid will either way. However, when you're ill, you aren't satisfied with simply getting some valid prescription or other; what you pay your doctor for is the doctor's expert advice concerning your particular illness. Similarly, what you pay a lawyer for is to tailor your will to your particular circumstances. Clearly, when you need a will, a lawyer's expert advice is always worth paying for.
Which one of the following is an assumption required by the argument presented in the advertisement?
A lawyer's knowledge and level of expertise is at least as complex as that of a doctor.
We don’t need the complexity of their abilties to be comparable. The lawyer-doctor analogy is just for the purpose of defining what the viewer wants (tailored service) and using this want to justify price.
Do-it-yourself software cannot tailor a person's will to meet that person's particular circumstances as well as a lawyer can.
If negated, then there’s no reason to pay the higher price for a lawyer. The argument would be ruined, so this is necessary.
Many people who prepare their wills using do-it-yourself software are not satisfied with the results.
The argument doesn’t require that there are people dissatisfied with the alternative to lawyers. If all people using the alternative are satisfied, that doesn’t exclude the possibility that these people did not receive a tailored experience.
In the majority of cases, valid wills do not adequately meet the needs of the persons for whom the wills were prepared.
(D) is zooming out to all valid wills, whether they came from DIY software or from a lawyer, but we are comparing two routes to a valid will and their ability to satisfy what you want (tailored service). Having more information about all valid wills does not help us in this comparison.
There is some way for an ill person to get a valid prescription without first consulting a doctor.
The lawyer equivalent of (E) is that there’s some way for a person to get a valid will without first consulting a lawyer. This is not necessary—we already know this is possible (DIY software). Also, we can’t assume this is true just because it is the analogy equivalent of (E).