R&D is a delicate balance between optimism and realism. During development things don’t work. it requires tremendous effort to debug problems and make the things work.
The realistic voice lingering in the background seems to speak words of wisdom. Maybe the theory is wrong, maybe there are no bugs just a problem in the assumptions. While this voice is important in quarterly strategic meetings, this voice kills the energy and enthusiasm required to push forward and weed out the bugs.
In projects, especially high risk ones, we need to keep in mind that when things don’t behave as expected it’s not always the problem with the expectations but more often with the things.