By looking for articles, it sounds like the person you need to convince is compelled by authority figures. That's fine, but it's also an easy way to build bad habits in entrepreneurship -- following the crowd.
Another way to handle this that also reinforces the "figure it out for yourself" entrepreneurial approach is also to simply begin to think about how you go to market.You could sit down with your compatriot and start to define some basic outlines of a customer:
- What problem does your customer have?
- How will you solve it in a way that seems valuable to them?
- Why will they choose you over a competitor?
- What language will you use that will resonate with them?
- Likely spending limits?
You will soon realize that you can't answer these questions unless you begin to define your target, and that means prioritization -- getting to that "first customer". Even if everyone would love it, they won't all love it equally. And unless you have unlimited marketing budgets, you're going to need to chose who you target.
I've worked with clients who have thought the same thing -- quite literally working with a client now who believes her skin care product can help 'all women'. And even if that were true (it's not), all women certainly aren't going to buy it at an initial $180 purchase price and a $40 refill every 6 weeks. We pulled some MRI data for the client and showed them that for their target price, we're really just talking about three specific segments that will spend like this, and one segment in particular was a great soft target (i.e. a place to start). So while this product may help all women, we'd waste a lot of money marketing to people who won't or can't buy it, or would take a lot of convincing.
Another way to position this is in the context of a growth strategy -- pick the people who will love you and advocate for you, and then your growth strategy can include growing that segment and activating their advocacy to help achieve scale. This way it's about using the segments efficiently and deliberately to grow the biz.
Some of Steve Blank's work could also be helpful for you.
Good luck, Molly!