Whatever you think of the outcome, the summit between President Trump and Kim Jong Un carries a lesson every entrepreneur needs — how to spot the snakes before they strike. Like the fable of the scorpion and the frog, some people simply can’t help their nature. Here’s how to recognize con artists before they cost your business dearly.

There’s certainly no shortage of tricks to use to get at the heart of a matter, Occam’s razor being one of the most famous, it’s a principle that states the simplest explanation tends to be the right one.

With roughly 400,000 franchises operating across 75 industries in the U.S. alone, franchising is clearly a popular way to get into business. But it’s not the right fit for everyone. Between start-up costs, royalty fees, and sourcing restrictions, there’s plenty to weigh against the built-in brand recognition and operational support you get in return. Here’s a rundown of the biggest franchise pros and cons before you sign anything.