Too often ideas are too quickly rejected because they are not quite perfect. And that's a pity.
A pity because it ignores the human aspect.
A pity because an idea can often be made al lot better with a little effort.
A pitty because it is a missed learning opportunity.
Within the Theory of Constraints (TOC) there is this beautiful technique to handle this in an interactive and well-communicable way. This technique is called Negative Branch Reservation, a mouthful and therefore according to good use abbreviated to three letters: NBr.