[everythingswan]

There are different ways to say similar things so your lexicon really depends on where you've spent your time over the last 5 - 10 years. Product Market Fit (PMF), high leverage activities, and risk assessments all overlap in my mind, it really just depends on the book/blog you read.

PMF is really just a way to say "I de-risked these key areas", right? I think it does the best to encapsulate the idea of getting important things right but it's not the whole puzzle.

After PMF popularized, we had tons of people talking about Product/Channel Fit and Message/Market Fit, etc., since you need acquisition channels to work to fulfill demand and solid messaging to drive demand to begin with. Being lazy with channels is a big risk, IMO as a marketer. It's especially risky for bootstrapped startups to waste time on the wrong channels.