[khedoros1]

> Thus the author's advice to sign the main contract but leave off the NDA.

That wasn't really clear to me. The wording (in the second situation in the post) made it sound like their partner signed neither the contract nor the NDA.

> “No,” my partner replied. “You sent a contract. I never signed it. It isn’t my problem that you never noticed.”

They could've been more explicit about which things were or weren't signed in the scenario that they described.