“I don’t like that idea…”

When someone says this while trying to solve a problem, it comes with great responsibility.  If they say it they better have some ideas to contribute. Alternatives are vulnerable and not giving one stops progress.  

Someone who poo-poo’s your idea, tells you why it wont work, and then fails to give an alternative idea is either lazy or cowardly. Being on the other side of this behavior requires a bit of resilience. 

Saying you “don’t like the idea” and not offering something generative displays a classic fixed mindset.  If you want to stay stuck, invite a wet blanket to your next whiteboarding session.