With regard to experimentation and learning: This is a rather broad question, and I've chosen to answer it quite literally, pertaining to individual behavior response, and pertaining specifically to those already interested in undertaking a specific project.
Trust is absolutely essential in order for experimentation to happen. Collaborators need to have trust amongst each other (as they are often going above and beyond for the greater good, and need to know that when push comes to shove, they've got each others' backs). And in turn, those change agents need to trust that the company they work for will listen and genuinely consider their ideas - even if they are not adopted. Otherwise the contribution and participation will just fall away.
To build trust, there is no substitute for face to face interaction. If possible, host a convening of key agents and stakeholders, and then level the playing field with a game that gets everyone laughing, and feeling a little bit off guard. Follow it up immediately with an honest, affirmation exercise, helping people to feel safe. Create activities that center around relationship building to start.
The primary outcome of those first convenings should be very honest, frank discussions of the challenges the project faces (without deteriorating into a moan fest - moderation is sometimes needed for this early stage), with a lens toward sweeping away these barriers that stand in the way.
More often than not, those barriers tend to be softened by strong relationship-building. That means listening very openly to those that hold the keys, try to uncover their primary objectives and needs, and work towards a symbiotic system by which you can all gain benefit from this project.
I also firmly believe in following a code of collaboration. Within the group, there should be a set expectation of what to expect from each other (i.e. using 'yes, and...' language, vowing to never criticize material without also coming with suggestions, etc.). That code has saved many well-meaning groups from being relegated to circular meeting hell.