The makers of Activite, a natural dietary supplement, claim that it promotes energy and mental alertness. ██ ████ ██ █████ ██████ ████ █████ █ ███████ ██████ ██ ████████ ████ ██ ███ ██████████ ████████ ████████ ████ ██ ██████████ █████ █████████ ██ █████ ███ ██ ██ ███ █████████ ████████ ██ ████ ████ ██ ██████
The author hypothesizes that Activate must be effective at providing energy and mental alertness. Why? Because the makers of Activate offer a free month’s supply to customers, which would not be in their interests if Activate was ineffective.
The argument rests on the causal claim that offering a free month of Activate can only be explained by Activate being effective. To weaken, we need to undermine that idea by showing that offering free samples could still be in the company's interests even if Activate isn't effective. One way we can do this is by attacking the author's assumptions.
The author relies on the assumption that the makers of Activate don’t get any benefit from the free sample other than having potential customers try their product. Any hidden benefit that the company gets from distributing free samples would weaken the author’s argument.
The author also assumes that potential customers who try Activate for free will only keep using it if it's actually effective. This means that we can weaken by finding another reason customers might keep buying even an ineffective supplement, something like the placebo effect or just the power of habit-forming.
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