[X] Go to the training room and talk to Rebecca. You need to talk to someone about this, someone who is willing to listen to your side and give you advice.
Emotionally, I'd say the biggest issue we're facing is that even with control over gravity we manage to be the incompetent one of the group, and David's hyper-competence/derision accentuates that. All of our options seem to be different methods of coping.
Rebecca is familiarity and support, Matthew is social networking and support, Contessa is taking umbrage, and bed is putting the issue off until tomorrow. More succinctly, intimacy, affiliation, anger, and avoidance.
Contessa would actually be my first choice if we were approaching her in a different mindset. 'path to a useful physics textbook' would be a method for Alex to actually start learning about what he's influencing (so that he/we could brainstorm ideas and run them by Manton for safety) instead of floundering between the severe disincentive to experiment called humanity's extinction and the trash-tier self esteem that we get as a result of working with David and having no goddamn clue as to what we're doing.
[as always, any and all claims I make are subject to being completely wrong.]