Ah... I think we're maybe talking about different things. The article is about getting other people involved as employees/contributors/team members... not investors.

I agree that investors (often) need more hard evidence before putting in money.

It's a bit easier (though not universally easier) to sell potential team members on a vision for a startup idea even without traction. Though, to be fair, it depends who you're trying to convince.

Aaron Dinin, PhD

I teach entrepreneurship at Duke. Software Engineer. PhD in English. I write about the mistakes entrepreneurs make since I’ve made plenty. More @ aarondinin.com