Postpone No
I’ve asked the developers I work with to postpone no. There is one developer I work with that, upon seeing a sketch for a design I’m working on, will immediately rip off five reasons why it can’t be done that way. The database this, and performance that, etcetera, etcetera. Then, five minutes later, he would be back at my desk with a great idea for how it could be implemented. I ask them to postpone saying ”no” for long enough to mull over the possibilities. Then, if a good solution hasn’t turned up, we’ll work on Plan B.