Never present ideas at 100% completion – set a lower limit such as 80%.
This allows room for critique and development by limiting the threat of people becoming too protective of their ideas.
As ideas are always ‘under construction’ people feel able to present more adventurous one without fear being looked at as incompetent.
Example: Kao Corporation policy.
Source: Dutta, S.W. (??). Kao Corporation – transformation of a company to a university.