How would you handle a situation where an IT engineer on your team wanted to use a design that you knew was inefficient or inappropriate for the project?

"If one of my team members approached me and wanted to use a design that I felt was inefficient or inappropriate for our project, the first thing I would do would be to listen to their suggestion and ask them for their rationale for using the design. If I still disagreed with them, I would calmly state this and describe why I felt we should not move forward with their suggestion. I might even provide an alternative close to their idea and work with the project we were currently engaged in. This typically works in most situations where a teammate and I disagree on a design. If we could still not reach an agreement, I would suggest that we take our conversation to the project leader or another member of the management team and ask them to arbitrate."