Sanderson intentionally did not tell his cousin about overhearing someone say that the factory would close, knowing that if he withheld this information, his cousin would assume it would remain open.
Conclusion
It was morally wrong for Sanderson to intentionally withhold from his cousin the fact that he overheard someone say the factory would close.
Evidence
Making a statement with the intention of misleading is lying. Lying is morally wrong. + Yes, Sanderson didn't actually make a statement, but there's no difference between stating something and failing to state something if they are done with the same intention.
Evaluation
We're trying to conclude that an action is morally wrong, and the author has provided us with the conditional rules we'll be using to try to derive that idea.
According to these rules, if you make an intentionally misleading statement, it's lying, which is morally wrong.
We know Sanderson didn't make an intentionally misleading statement, but our author is saying that Sanderson intended to mislead by failing to say something (and those are morally equivalent).
On a first read, it's hard for me to see the wiggle room here. According to these rules, isn't Sanderson guilty of something morally wrong?
If Sanderson's failure to say something was done with the intent to mislead, then he was lying, and so he did something morally wrong.
So how can we argue that Sanderson's failure to say something was not done with the intent to mislead?
We know that Sanderson was aware that by withholding info, his cousin would assume the factory would remain open. Do we know for a fact that
We don't. The person that Sanderson overheard is not necessarily right about the factory. If Sanderson knows that random dude who said "the factory is gonna close" is dead wrong about that, then withholding that story from his cousin, and letting his cousin continue to believe that the factory will remain open, is not intentionally misleading.
If I overhear an anti-vaxxer saying that "vaccines cause autism" and I refrain from saying that to my cousin, knowing that my cousin will otherwise (continue to) think that vaccines don't cause autism, I'm not intentionally misleading my cousin or lying to her. I'm just protecting her from what I believe is erroneous information.
Goal
Since the only possible objection to this argument is, , the correct answer will probably rule out one of those objections.
- Sanderson does not think the factory will remain open - Sanderson believed the person he overheard was saying something true