Darragh Stewart comes on screen with a handlebar moustache and Tibetan prayer flags hanging in the background.  There is sun coming in through his window and it looks like a beautiful morning in Kinsale, County Cork.  Stewart holds a PhD from Trinity College Dublin in molecular genetics which is as “sciencey as science gets,” he jokes, and he is deep in the mind-altering world of psychedelics. “I’m a bit of a black sheep, I’m deeply holistic and then I also really love science,” Stewart said. “With my training, I’m able to critically look at what works, what doesn’t work and…