For many years one example of process thinking, resource gathering, requirements, implementation and acceptance criteria has been the exercise - make PB&J sandwiches. I've done this with groups to discuss the simple task that we typically overlook as "experts" in sandwich making, that perhaps a 5 year old will find difficulty glossing over the - get bread - instruction.
Here's a TED Talk by Tom Wujec who has analyzed a similar exercise and draws some powerful conclusions from many iterations. Watch it and then rethink the simple acts in your life.
So tell me again why group collaboration is important when you are solving wicked problems?