It's called a "non disclosure" agreement not a non compete agreement. What you're signing up for is "I won't disclose your content to a third party" So it's fraught with risk. You have to take that conversation and bottle it away and not mention it for 3-5 years to anyone else in case they think it's a good idea and pivot or start a company to go do that.
You sign that agreement, have one coffee, never hear from the guy again. Two years later you join on as an advisor to a company that does something similar to that startup and they're claiming you must be disclosing what you learned from them to this new startup! Far fetched but if you sign 20 - 30 NDA's a year because you're actively helping people you will get bit on the butt but some neurotic founder at some point.
You sign that agreement, have one coffee, never hear from the guy again. Two years later you join on as an advisor to a company that does something similar to that startup and they're claiming you must be disclosing what you learned from them to this new startup! Far fetched but if you sign 20 - 30 NDA's a year because you're actively helping people you will get bit on the butt but some neurotic founder at some point.